text: <CALLBACK  type="HASH">
  	<METHODS>
  		<METHOD>
  			<PARAM name="callback">
  				<DESC>Callback to contain returned property values</DESC>
  				<POSSIBILITY>
  					<DESC>Function to receive property values</DESC>
  					<TYPE>
  						<FUNCTION>
  							<FUNC_PARAM>
  								<DESC>Mapping of property names to Values</DESC>
  								<TYPE>HASH</TYPE>
  							</FUNC_PARAM>
  						</FUNCTION>	
  					</TYPE>
  				</POSSIBILITY>
  				<POSSIBILITY>
  					<DESC>URL</DESC>
  					<TYPE>String</TYPE>
  				</POSSIBILITY>
  				<POSSIBILITY>
  					<DESC>Synchronous Operation</DESC>
  					<TYPE>nil</TYPE>
  				</POSSIBILITY>
  			</PARAM>
              
  			<PARAM name="callbackParam">
  				<DESC>Application specific parameter</DESC>
                  <TYPE>String</TYPE>
  
                  <CAN_BE_NIL>
                      <DESC>Can be missed</DESC>
                  </CAN_BE_NIL>
              </PARAM>
  		</METHOD>
  	</METHODS>
  </CALLBACK>
  