'Adds additional fields to the requested_fields context for the serializer.'

def add_additional_requested_fields(self, context=None):

    if (context is None):
        context = self.serializer_context
    context['requested_fields'].extend(['children', 'display_name', 'graded', 'format', 'block_counts', 'student_view_data', 'student_view_multi_device', 'lti_url', 'visible_to_staff_only'])
