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/*
 * Copyright (C) 2009 The Guava Authors
 *
 * 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.google.common.annotations;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * The presence of this annotation on a method indicates that the method may
 * not be used with the
 * Google Web Toolkit (GWT),
 * even though its type is annotated as {@link GwtCompatible} and accessible in
 * GWT.  They can cause GWT compilation errors or simply unexpected exceptions
 * when used in GWT.
 *
 * Note that this annotation should only be applied to methods, fields, or
 * inner classes of types which are annotated as {@link GwtCompatible}.
 *
 * @author Charles Fry
 */
@Retention(RetentionPolicy.CLASS)
@Target({
    ElementType.TYPE, ElementType.METHOD,
    ElementType.CONSTRUCTOR, ElementType.FIELD })
@Documented
@GwtCompatible
public @interface GwtIncompatible {
  /**
   * Describes why the annotated element is incompatible with GWT. Since this is
   * generally due to a dependence on a type/method which GWT doesn't support,
   * it is sufficient to simply reference the unsupported type/method. E.g.
   * "Class.isInstance".
   */
  String value();
}