Add __getattr__ to bpy.types.OperatorProperties to suppress warnings when accessing attributes

[Mysteryem]

Example use of OperatorProperties is in the description classmethod of Operator subclasses or in cases of checking whether a specific property of an Operator instance is set or if the default value of that property is being used.

The properties of the Operator can be accessed from its OperatorProperties through the same, normal attribute access, but PyCharm will consider these attributes to not exist since they're not defined in the OperatorProperties class.

Adding a __getattr__ stub method to OperatorProperties will suppress warnings when accessing attributes that don't exist in the class. (adding __getattribute__ seems to work too)

The method must have a docstring indicating

I'm not anticipating that there will be a way to signify to PyCharm that it should look at the attributes of the Operator instead.

Note that the properties of Operator instances may actually be stored in its OperatorProperties (.properties). The Operator class overrides __getattribute__ to get attributes from its OperatorProperties if the name of the attribute matches a property defined in the OperatorProperties. See the Operator class in bpy_types.py of Blender.