How should I name my message file?
I am trying to create a cmake dependency that has all my messages, however the following error happens:
rosidl_adapter.parser.InvalidResourceName: 'testMsg' is an invalid message
name. It should have the pattern '^[A-Z][A-Za-z0-9]*$'
Looks like that the name of my message file is incorrect, but I do not understand what ^[A-Z][A-Za-z0-9]*$' means.