code: package geotrellis.util.annotations;
  
  /*
   * 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.
   *
   * Inspired from
   * https://github.com/ReactiveX/RxJava/blob/1.x/src/main/java/rx/annotations/Experimental.java
   * which was inspired from
   * https://code.google.com/p/guava-libraries/source/browse/guava/src/com/google/common/annotations/Beta.java
   */
  
  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;
  
  /**
   * Signifies that a public API (public class, method or field) is will almost certainly
   * be changed or removed in a future release. An API bearing this annotation should not
   * be used or relied upon in production code. APIs exposed with this annotation exist
   * to allow broad testing and feedback on experimental features.
   **/
  @Retention(RetentionPolicy.CLASS)
  @Target({
          ElementType.ANNOTATION_TYPE,
          ElementType.CONSTRUCTOR,
          ElementType.FIELD,
          ElementType.METHOD,
          ElementType.TYPE })
  @Documented
  public @interface experimental {}
  