def update_collection(self, guid, name, description='', tags='', business_unit_guid=None, custom_fields=[], assets=[]):
    return Collections().update(name, description, tags, business_unit_guid, custom_fields, assets)
def update_collection(self, guid, name, description=, tags=, business_unit_guid=None, custom_fields=[], assets=[]):
    return Collections().update(name, description, tags, business_unit_guid, custom_fields, assets)