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/*
 * Copyright (C) 2014-2023 Objectos Software LTDA.
 *
 * 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 objectos.code.tmpl;

/**
 * Represents an instruction that generates part of the output of a template.
 *
 * 
 * Unless noted references to a particular instruction MUST NOT be reused.
 */
public interface Instruction {

  /**
   * Returns itself.
   *
   * 
   * Its sole purpose is to trigger an implicit null check.
   *
   * @return this instance
   */
  default Object self() { return this; }

}