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  package org.apache.cayenne.cache.invalidation;
  
  /**
   * Immutable object describing cache group.
   * Used as a result in invalidation function.
   *
   * @see CacheGroupDescriptor#CacheGroupDescriptor(String)
   * @see CacheGroupDescriptor#CacheGroupDescriptor(String, Class, Class)
   *
   * @since 4.0
   */
  public class CacheGroupDescriptor {
  
      private final String cacheGroupName;
  
      private final Class<?> keyType;
  
      private final Class<?> valueType;
  
      public CacheGroupDescriptor(String cacheGroupName) {
          this(cacheGroupName, Void.class, Void.class);
      }
  
      public CacheGroupDescriptor(String cacheGroupName, Class<?> keyType, Class<?> valueType) {
          this.cacheGroupName = cacheGroupName;
          this.keyType = keyType;
          this.valueType = valueType;
      }
  
      public String getCacheGroupName() {
          return cacheGroupName;
      }
  
      public Class<?> getKeyType() {
          return keyType;
      }
  
      public Class<?> getValueType() {
          return valueType;
      }
  }
  