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Utility functions used by different components of Pathling.

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/*
 * Copyright 2022 Commonwealth Scientific and Industrial Research
 * Organisation (CSIRO) ABN 41 687 119 230.
 *
 * 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 au.csiro.pathling.sql.udf;

import org.apache.spark.sql.api.java.UDF2;

/**
 * A registrable UDF function with two arguments.
 *
 * @param  the type of the first argument.
 * @param  the type of the second argument.
 * @param  the type of the result.
 */
public interface SqlFunction2 extends SqlFunction, UDF2 {

}