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Contains various utility classes for use in Java development.

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/*
 * Copyright 2017 - 2019 Michael Rapp
 *
 * 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 de.mrapp.util

/**
 * Defines the interface, a class that can be applied to instances of a specific type according to
 * the visitor pattern, must implement.
 *
 * @param T The type of the visited instances
 * @author Michael Rapp
 * @since 2.2.0
 */
@FunctionalInterface
interface Visitor {

    /**
     * Applies the visitor to a specific [instance].
     */
    fun visit(instance: T)

}