Message Start event without setting a Message

[madhurrya]

If a Message Start event is added to a model without setting any message properties (without setting the message name), when saving the model it gives a message saying 'Could not find messageRef from message event definition: {message_event_definition}.'
This message is not user friendly and doesn't explain what the user has to do to fix that error.
(@calexh-sar has ignored that message and has assumed it got saved and he has lost all the work he did)

Didn't notice that behavior for the Message End event.

[use-tusk]

Tusk may be able to work on this ticket. Add the Tusk label to create a pull request.