question: the message properties concode_field_sep String originalCorrelationId concode_elem_sep AsyncCallback callback concode_elem_sep Exchange exchange concode_elem_sep String correlationId concode_elem_sep byte[] message concode_elem_sep long timeout concode_elem_sep AMQP.BasicProperties properties concode_field_sep String getCorrelationId concode_elem_sep String getOriginalCorrelationId concode_elem_sep boolean isTimeout concode_elem_sep byte[] getMessage concode_elem_sep Exchange getExchange concode_elem_sep long getRequestTimeout concode_elem_sep AsyncCallback getCallback
target: AMQP . BasicProperties function ( ) { return properties ; }