Inherit from QBufferDataGenerator

Hi, I have a difficulty with inheriting from QBufferDataGenerator:
I use python3 and

PyQt5>=5.12
pyqt3d>=5.12
pyopengl

Here's an example.py

from PyQt5.QtCore import *from PyQt5.Qt3DCore import *from
PyQt5.Qt3DRender import *
class SomeDataGenerator(QBufferDataGenerator):
    def __init__(self, some_bytes):
        super().__init__()
        self._bytes = some_bytes

    def __call__(self):
        return self._bytes

    def __eq__(self, other):
        return (self._bytes == other._bytes)

    def __neq__(self, other):
        return not (self._bytes == other._bytes)

    def id(self):
        return functorTypeId(SomeDataGenerator)


someBytes = QByteArray()
someBuffer = QBuffer(QBuffer.VertexBuffer)
someDataGenerator = SomeDataGenerator(someBytes)
someBuffer.setDataGenerator(someDataGenerator)

Run provides the following result:

$ python3 example.py...TypeError:
PyQt5.Qt3DRender.QBufferDataGenerator cannot be instantiated or
sub-classed

-- 
Best regards,
Maxim Okhotskiy

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