eventespresso / event-espresso-core

		$messenger = str_replace( ' ', '_', $messenger );

		$messenger = 'EE_' . $messenger . '_messenger';

		if ( ! class_exists( $messenger ) ) {

			throw new EE_Error(

				sprintf(

					__( 'There is no messenger class for the given string (%s)', 'event_espresso' ),

					$this->_m_name

				)

			);

		}

		$this->_messenger = new $messenger();

		$message_type = str_replace( ' ', '_', $message_type );

		$message_type = 'EE_' . $message_type . '_message_type';

		if ( !class_exists( $message_type ) ) {

			throw new EE_Error(

				sprintf(

					__( 'There is no message type class for the given string (%s)', 'event_espresso' ),

					$this->_mt_name

				)

			);

		}

		$this->_message_type = new $message_type();