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   * Copyright (c) 2005, 2020, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle in the LICENSE file that accompanied this code.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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   */
  
  package jdkx.lang.model.type;
  
  
  import java.util.List;
  
  import jdkx.lang.model.element.ExecutableElement;
  
  /**
   * Represents the type of an executable.  An <i>executable</i>
   * is a method, constructor, or initializer.
   *
   * <p> The executable is
   * represented as when viewed as a method (or constructor or
   * initializer) of some reference type.
   * If that reference type is parameterized, then its actual
   * type arguments are substituted into any types returned by the methods of
   * this interface.
   *
   * @author Joseph D. Darcy
   * @author Scott Seligman
   * @author Peter von der Ah&eacute;
   * @see ExecutableElement
   * @since 1.6
   */
  public interface ExecutableType extends TypeMirror {
  
      /**
       * Returns the type variables declared by the formal type parameters
       * of this executable.
       *
       * @return the type variables declared by the formal type parameters,
       *          or an empty list if there are none
       */
      List<? extends TypeVariable> getTypeVariables();
  
      /**
       * {@return the return type of this executable}
       * Returns a {@link NoType} with kind {@link TypeKind#VOID VOID}
       * if this executable is not a method, or is a method that does not
       * return a value.
       */
      TypeMirror getReturnType();
  
      /**
       * Returns the types of this executable's formal parameters.
       *
       * @return the types of this executable's formal parameters,
       *          or an empty list if there are none
       */
      List<? extends TypeMirror> getParameterTypes();
  
      /**
       * Returns the receiver type of this executable,
       * or {@link jdkx.lang.model.type.NoType NoType} with
       * kind {@link jdkx.lang.model.type.TypeKind#NONE NONE}
       * if the executable has no receiver type.
       *
       * An executable which is an instance method, or a constructor of an
       * inner class, has a receiver type derived from the {@linkplain
       * ExecutableElement#getEnclosingElement declaring type}.
       *
       * An executable which is a static method, or a constructor of a
       * non-inner class, or an initializer (static or instance), has no
       * receiver type.
       *
       * @return the receiver type of this executable
       * @since 1.8
       *
       * @jls 8.4 Method Declarations
       * @jls 8.4.1 Formal Parameters
       * @jls 8.8 Constructor Declarations
       */
      TypeMirror getReceiverType();
  
      /**
       * Returns the exceptions and other throwables listed in this
       * executable's {@code throws} clause.
       *
       * @return the exceptions and other throwables listed in this
       *          executable's {@code throws} clause,
       *          or an empty list if there are none.
       */
      List<? extends TypeMirror> getThrownTypes();
  }
  