al block.
            Valid values are between 0 and 5, with 5 meaning all backbone layers are trainable. If ``None`` is
            passed (the default) this value is set to 4.
        **kwargs: parameters passed to the ``torchvision.models.detection.SSD``
            base class. Please refer to the `source code
            <https://github.com/pytorch/vision/blob/main/torchvision/models/detection/ssd.py>`_
            for more details about this class.

    .. autoclass:: torchvision.models.detection.SSD300_VGG16_Weights
        :members:
    rv