Previously, the parser assumed that the identifier reference in the event definition was valid, i.e. that the identifier was defined at the top level.
If this was not the case, the corresponding event definition was not retrieved. The following code attempted to access properties with undefined values.
This generated an error.

Notes

• to reproduce the problem and check the fix in demo, you can use the diagram used in the new integration test introduced in this PR.
• this PR only adds an integration test and not a parsing unit test. If you think a unit test is required, please let me know.