Start/EndEvent element templates possible?

Hello together,

I´m trying to prepare some element templates to make the modelling of a process easier. At the moment able to create a JSON-(Template) - file for a general start event, but i don´t know how to specify an execution listener in the JSON-file.

Are some examples availble anywhere?
In earlier topic a read that Modeler does not support element templates with an execution listener.
Is it right?

Best regards

Sorry, templating execution listeners is not possible at the moment.