def get_metadata_cls(media_type):
    """Get the ``metadata`` class for a media_type

    Args:
        media_type (str): a media type value

    Returns:
        a :class:`Metadata` class
    """
    if media_type == fom.IMAGE:
        return ImageMetadata
    elif media_type == fom.VIDEO:
        return VideoMetadata
    elif media_type == fom.THREE_D:
        return SceneMetadata

    return Metadata
Get the ``metadata`` class for a media_type

    Args:
        media_type (str): a media type value

    Returns:
        a :class:`Metadata` class
    
fiftyone/core/metadata.py