def assign_property_defaults(process_data: bool=True, process_bones: bool=True
    ):
    """Assign the current values of custom properties as their defaults, for use as part of the rest pose state in NLA track mixing 

    :param process_data: Process data properties 
    :type process_data: bool
    :param process_bones: Process bone properties 
    :type process_bones: bool
    """
    pass
