Clarify introducing properties
When you have an aspect to introduce a property, it's not clear this is not possible without any other advice in the same aspect.
The actual error:
The class "Test\Aspect\ModelAspect" is tagged to be an aspect but doesn't
contain advices nor pointcut or introduction declarations.
Which seems incorrect for the developer as he introduced a property. Either this error should be clarified, or it should be possible to introduce just a property (last one doesn't sound really like a usecase as you would expect changed behavior if a new property is added, so in a common usecase you would have at least 1 advise).
This part should also be clarified more in documentation
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