      *  @return <code>true</code> if the operation is successful.
      *  
      *  @langversion 3.0
-     *  @playerversion Flash 10
      *  @playerversion AIR 2.5
      *  @productversion Flex 4.5
      */

    
    /**
     *  Flushes the data being managed by the persistence manager to
     *  disk or another external storage file.
     *
     *  @return <code>true</code> if the operation is successful.
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 2.5
     *  @productversion Flex 4.5
     */

    
    /**
     *  Returns the value of a property stored in the persistence manager.
     *  Properties are saved as key:value pairs.
     *  
     *  @param key The property key.
     *
     *  @return The value of a property stored in the persistence manager.
     * 
     *  @langversion 3.0
     *  @playerversion AIR 2.5
     *  @productversion Flex 4.5
     */
