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A collection of Immutable Tuple classes that represent sets of a fixed length where every element has a specific type.

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/*
 *
 * Copyright (c) 2006-2019, Speedment, Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); You may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at:
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.speedment.common.tuple.nullable;

import com.speedment.common.tuple.MutableTuple;
import com.speedment.common.tuple.Tuple;
import com.speedment.common.tuple.TupleOfNullables;
import com.speedment.common.tuple.getter.TupleGetter0;
import com.speedment.common.tuple.getter.TupleGetter10;
import com.speedment.common.tuple.getter.TupleGetter11;
import com.speedment.common.tuple.getter.TupleGetter12;
import com.speedment.common.tuple.getter.TupleGetter13;
import com.speedment.common.tuple.getter.TupleGetter14;
import com.speedment.common.tuple.getter.TupleGetter15;
import com.speedment.common.tuple.getter.TupleGetter16;
import com.speedment.common.tuple.getter.TupleGetter17;
import com.speedment.common.tuple.getter.TupleGetter18;
import com.speedment.common.tuple.getter.TupleGetter19;
import com.speedment.common.tuple.getter.TupleGetter1;
import com.speedment.common.tuple.getter.TupleGetter20;
import com.speedment.common.tuple.getter.TupleGetter2;
import com.speedment.common.tuple.getter.TupleGetter3;
import com.speedment.common.tuple.getter.TupleGetter4;
import com.speedment.common.tuple.getter.TupleGetter5;
import com.speedment.common.tuple.getter.TupleGetter6;
import com.speedment.common.tuple.getter.TupleGetter7;
import com.speedment.common.tuple.getter.TupleGetter8;
import com.speedment.common.tuple.getter.TupleGetter9;
import com.speedment.common.tuple.getter.TupleGetter;

import java.util.Optional;

/**
 * This interface defines a generic {@link TupleOfNullables} of degree21 that
 * can hold null values. A TupleOfNullable is type safe, immutable and thread
 * safe. For pure non-null value elements see {@link Tuple}. For mutable tuples
 * see {@link MutableTuple}
 * This {@link TupleOfNullables} has a degree of 21
 * 

 * Generated by com.speedment.sources.pattern.tuple.TuplePattern
 * 
 * @param   type of element 0
 * @param   type of element 1
 * @param   type of element 2
 * @param   type of element 3
 * @param   type of element 4
 * @param   type of element 5
 * @param   type of element 6
 * @param   type of element 7
 * @param   type of element 8
 * @param   type of element 9
 * @param  type of element 10
 * @param  type of element 11
 * @param  type of element 12
 * @param  type of element 13
 * @param  type of element 14
 * @param  type of element 15
 * @param  type of element 16
 * @param  type of element 17
 * @param  type of element 18
 * @param  type of element 19
 * @param  type of element 20
 * 
 * @author Per Minborg
 * 
 * @see Tuple
 * @see TupleOfNullables
 * @see MutableTuple
 */
public interface Tuple21OfNullables extends TupleOfNullables {
    
    /**
     * Returns the 0th element from this tuple.
     * 
     * @return the 0th element from this tuple.
     */
    Optional get0();
    
    /**
     * Returns the 1st element from this tuple.
     * 
     * @return the 1st element from this tuple.
     */
    Optional get1();
    
    /**
     * Returns the 2nd element from this tuple.
     * 
     * @return the 2nd element from this tuple.
     */
    Optional get2();
    
    /**
     * Returns the 3rd element from this tuple.
     * 
     * @return the 3rd element from this tuple.
     */
    Optional get3();
    
    /**
     * Returns the 4th element from this tuple.
     * 
     * @return the 4th element from this tuple.
     */
    Optional get4();
    
    /**
     * Returns the 5th element from this tuple.
     * 
     * @return the 5th element from this tuple.
     */
    Optional get5();
    
    /**
     * Returns the 6th element from this tuple.
     * 
     * @return the 6th element from this tuple.
     */
    Optional get6();
    
    /**
     * Returns the 7th element from this tuple.
     * 
     * @return the 7th element from this tuple.
     */
    Optional get7();
    
    /**
     * Returns the 8th element from this tuple.
     * 
     * @return the 8th element from this tuple.
     */
    Optional get8();
    
    /**
     * Returns the 9th element from this tuple.
     * 
     * @return the 9th element from this tuple.
     */
    Optional get9();
    
    /**
     * Returns the 10th element from this tuple.
     * 
     * @return the 10th element from this tuple.
     */
    Optional get10();
    
    /**
     * Returns the 11st element from this tuple.
     * 
     * @return the 11st element from this tuple.
     */
    Optional get11();
    
    /**
     * Returns the 12nd element from this tuple.
     * 
     * @return the 12nd element from this tuple.
     */
    Optional get12();
    
    /**
     * Returns the 13rd element from this tuple.
     * 
     * @return the 13rd element from this tuple.
     */
    Optional get13();
    
    /**
     * Returns the 14th element from this tuple.
     * 
     * @return the 14th element from this tuple.
     */
    Optional get14();
    
    /**
     * Returns the 15th element from this tuple.
     * 
     * @return the 15th element from this tuple.
     */
    Optional get15();
    
    /**
     * Returns the 16th element from this tuple.
     * 
     * @return the 16th element from this tuple.
     */
    Optional get16();
    
    /**
     * Returns the 17th element from this tuple.
     * 
     * @return the 17th element from this tuple.
     */
    Optional get17();
    
    /**
     * Returns the 18th element from this tuple.
     * 
     * @return the 18th element from this tuple.
     */
    Optional get18();
    
    /**
     * Returns the 19th element from this tuple.
     * 
     * @return the 19th element from this tuple.
     */
    Optional get19();
    
    /**
     * Returns the 20th element from this tuple.
     * 
     * @return the 20th element from this tuple.
     */
    Optional get20();
    
    @Override
    default int degree() {
        return 21;
    }
    
    @SuppressWarnings("unchecked")
    default Optional get(int index) {
        switch (index) {
            case 0 : return (Optional)get0();
            case 1 : return (Optional)get1();
            case 2 : return (Optional)get2();
            case 3 : return (Optional)get3();
            case 4 : return (Optional)get4();
            case 5 : return (Optional)get5();
            case 6 : return (Optional)get6();
            case 7 : return (Optional)get7();
            case 8 : return (Optional)get8();
            case 9 : return (Optional)get9();
            case 10 : return (Optional)get10();
            case 11 : return (Optional)get11();
            case 12 : return (Optional)get12();
            case 13 : return (Optional)get13();
            case 14 : return (Optional)get14();
            case 15 : return (Optional)get15();
            case 16 : return (Optional)get16();
            case 17 : return (Optional)get17();
            case 18 : return (Optional)get18();
            case 19 : return (Optional)get19();
            case 20 : return (Optional)get20();
            default : throw new IndexOutOfBoundsException(String.format("Index %d is outside bounds of tuple of degree %s", index, degree()));
        }
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 0th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 0th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter0, Optional> getter0() {
        return Tuple21OfNullables::get0;
    }
    
    /**
     * Returns the 0th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 0th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T0 getOrNull0() {
        return get0().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 0th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 0th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter0, T0> getterOrNull0() {
        return Tuple21OfNullables::getOrNull0;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 1st element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 1st position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter1, Optional> getter1() {
        return Tuple21OfNullables::get1;
    }
    
    /**
     * Returns the 1st element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 1st element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T1 getOrNull1() {
        return get1().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 1st element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 1st position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter1, T1> getterOrNull1() {
        return Tuple21OfNullables::getOrNull1;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 2nd element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 2nd position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter2, Optional> getter2() {
        return Tuple21OfNullables::get2;
    }
    
    /**
     * Returns the 2nd element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 2nd element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T2 getOrNull2() {
        return get2().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 2nd element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 2nd position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter2, T2> getterOrNull2() {
        return Tuple21OfNullables::getOrNull2;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 3rd element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 3rd position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter3, Optional> getter3() {
        return Tuple21OfNullables::get3;
    }
    
    /**
     * Returns the 3rd element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 3rd element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T3 getOrNull3() {
        return get3().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 3rd element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 3rd position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter3, T3> getterOrNull3() {
        return Tuple21OfNullables::getOrNull3;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 4th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 4th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter4, Optional> getter4() {
        return Tuple21OfNullables::get4;
    }
    
    /**
     * Returns the 4th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 4th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T4 getOrNull4() {
        return get4().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 4th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 4th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter4, T4> getterOrNull4() {
        return Tuple21OfNullables::getOrNull4;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 5th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 5th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter5, Optional> getter5() {
        return Tuple21OfNullables::get5;
    }
    
    /**
     * Returns the 5th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 5th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T5 getOrNull5() {
        return get5().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 5th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 5th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter5, T5> getterOrNull5() {
        return Tuple21OfNullables::getOrNull5;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 6th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 6th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter6, Optional> getter6() {
        return Tuple21OfNullables::get6;
    }
    
    /**
     * Returns the 6th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 6th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T6 getOrNull6() {
        return get6().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 6th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 6th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter6, T6> getterOrNull6() {
        return Tuple21OfNullables::getOrNull6;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 7th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 7th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter7, Optional> getter7() {
        return Tuple21OfNullables::get7;
    }
    
    /**
     * Returns the 7th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 7th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T7 getOrNull7() {
        return get7().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 7th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 7th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter7, T7> getterOrNull7() {
        return Tuple21OfNullables::getOrNull7;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 8th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 8th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter8, Optional> getter8() {
        return Tuple21OfNullables::get8;
    }
    
    /**
     * Returns the 8th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 8th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T8 getOrNull8() {
        return get8().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 8th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 8th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter8, T8> getterOrNull8() {
        return Tuple21OfNullables::getOrNull8;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 9th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 9th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter9, Optional> getter9() {
        return Tuple21OfNullables::get9;
    }
    
    /**
     * Returns the 9th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 9th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T9 getOrNull9() {
        return get9().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 9th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 9th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter9, T9> getterOrNull9() {
        return Tuple21OfNullables::getOrNull9;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 10th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 10th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter10, Optional> getter10() {
        return Tuple21OfNullables::get10;
    }
    
    /**
     * Returns the 10th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 10th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T10 getOrNull10() {
        return get10().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 10th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 10th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter10, T10> getterOrNull10() {
        return Tuple21OfNullables::getOrNull10;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 11st element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 11st position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter11, Optional> getter11() {
        return Tuple21OfNullables::get11;
    }
    
    /**
     * Returns the 11st element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 11st element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T11 getOrNull11() {
        return get11().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 11st element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 11st position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter11, T11> getterOrNull11() {
        return Tuple21OfNullables::getOrNull11;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 12nd element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 12nd position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter12, Optional> getter12() {
        return Tuple21OfNullables::get12;
    }
    
    /**
     * Returns the 12nd element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 12nd element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T12 getOrNull12() {
        return get12().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 12nd element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 12nd position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter12, T12> getterOrNull12() {
        return Tuple21OfNullables::getOrNull12;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 13rd element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 13rd position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter13, Optional> getter13() {
        return Tuple21OfNullables::get13;
    }
    
    /**
     * Returns the 13rd element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 13rd element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T13 getOrNull13() {
        return get13().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 13rd element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 13rd position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter13, T13> getterOrNull13() {
        return Tuple21OfNullables::getOrNull13;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 14th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 14th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter14, Optional> getter14() {
        return Tuple21OfNullables::get14;
    }
    
    /**
     * Returns the 14th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 14th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T14 getOrNull14() {
        return get14().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 14th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 14th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter14, T14> getterOrNull14() {
        return Tuple21OfNullables::getOrNull14;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 15th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 15th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter15, Optional> getter15() {
        return Tuple21OfNullables::get15;
    }
    
    /**
     * Returns the 15th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 15th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T15 getOrNull15() {
        return get15().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 15th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 15th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter15, T15> getterOrNull15() {
        return Tuple21OfNullables::getOrNull15;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 16th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 16th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter16, Optional> getter16() {
        return Tuple21OfNullables::get16;
    }
    
    /**
     * Returns the 16th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 16th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T16 getOrNull16() {
        return get16().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 16th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 16th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter16, T16> getterOrNull16() {
        return Tuple21OfNullables::getOrNull16;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 17th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 17th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter17, Optional> getter17() {
        return Tuple21OfNullables::get17;
    }
    
    /**
     * Returns the 17th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 17th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T17 getOrNull17() {
        return get17().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 17th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 17th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter17, T17> getterOrNull17() {
        return Tuple21OfNullables::getOrNull17;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 18th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 18th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter18, Optional> getter18() {
        return Tuple21OfNullables::get18;
    }
    
    /**
     * Returns the 18th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 18th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T18 getOrNull18() {
        return get18().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 18th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 18th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter18, T18> getterOrNull18() {
        return Tuple21OfNullables::getOrNull18;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 19th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 19th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter19, Optional> getter19() {
        return Tuple21OfNullables::get19;
    }
    
    /**
     * Returns the 19th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 19th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T19 getOrNull19() {
        return get19().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 19th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 19th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter19, T19> getterOrNull19() {
        return Tuple21OfNullables::getOrNull19;
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 20th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 20th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter20, Optional> getter20() {
        return Tuple21OfNullables::get20;
    }
    
    /**
     * Returns the 20th element from this tuple or {@code null} if no such
     * element is present.
     * 
     * @return the 20th element from this tuple or {@code null} if no such
     *         element is present.
     */
    default T20 getOrNull20() {
        return get20().orElse(null);
    }
    
    /**
     * Returns a {@link TupleGetter getter} for the 20th element in the {@code
     * Tuple}.
     * 
     * @return      the element at the 20th position
     * @param   the 0th element type
     * @param   the 1st element type
     * @param   the 2nd element type
     * @param   the 3rd element type
     * @param   the 4th element type
     * @param   the 5th element type
     * @param   the 6th element type
     * @param   the 7th element type
     * @param   the 8th element type
     * @param   the 9th element type
     * @param  the 10th element type
     * @param  the 11st element type
     * @param  the 12nd element type
     * @param  the 13rd element type
     * @param  the 14th element type
     * @param  the 15th element type
     * @param  the 16th element type
     * @param  the 17th element type
     * @param  the 18th element type
     * @param  the 19th element type
     * @param  the 20th element type
     */
    static  TupleGetter20, T20> getterOrNull20() {
        return Tuple21OfNullables::getOrNull20;
    }
}    

    

    

            

    

            



    
    






    
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