bpy_prop_collection is missing `__len__`

[angavrilov]

System Information

• OS: Windows
• IDE: PyCharm
• Version: fake_bpy_modules_3.3-20221006

Description about the bug

The bpy_prop_collection class doesn't have a __len__ method, which causes PyCharm to complain about any uses of len(...) on collections. The actual collections in the blender python console have __len__ in dir. Manually editing the file to add __len__ fixes it.

Edit: the Matrix type also supports len in practice - it returns the matrix size, i.e. 3 for 3x3, 4 for 4x4.

[nutti]

This issue is now fixed.