content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.chemistry.opencmis.commons.data;
  
  import java.io.Serializable;
  import java.util.Map;
  
  /**
   * Representation of an extension feature.
   * 
   * @cmis 1.1
   */
  public interface ExtensionFeature extends Serializable, ExtensionsData {
  
      /**
       * Returns the unique feature ID.
       * 
       * @return the feature ID, not {@code null}
       * 
       * @cmis 1.1
       */
      String getId();
  
      /**
       * Returns a URL that provides more information about the feature.
       * 
       * @return the feature URL, may be {@code null}
       * 
       * @cmis 1.1
       */
      String getUrl();
  
      /**
       * Returns a human-readable name for the feature.
       * 
       * @return the feature name, may be {@code null}
       * 
       * @cmis 1.1
       */
      String getCommonName();
  
      /**
       * Returns a feature version label.
       * 
       * @return the feature version label, may be {@code null}
       * 
       * @cmis 1.1
       */
      String getVersionLabel();
  
      /**
       * Returns a human-readable description of the feature.
       * 
       * @return the feature description, may be {@code null}
       * 
       * @cmis 1.1
       */
      String getDescription();
  
      /**
       * Returns extra feature data.
       * 
       * @return the key-value pairs of extra data, may be {@code null}
       * 
       * @cmis 1.1
       */
      Map<String, String> getFeatureData();
  }
  