});
MuleEvent event = createTestOutboundEvent();
event.getMessage().setOutboundProperty(MY_PROPERTY_KEY, MY_PROPERTY_VAL);
event.getMessage().setOutboundProperty(MuleProperties.MULE_CORRELATION_ID_PROPERTY, MULE_CORRELATION_ID_VAL);
MuleEvent result = mp.process(event);
assertNotNull(result);
assertEquals(TEST_MESSAGE, result.getMessageAsString());
assertEquals(MY_PROPERTY_VAL, result.getMessage().getOutboundProperty(MY_PROPERTY_KEY));
assertEquals(MULE_CORRELATION_ID_VAL,