'Return list of labels for a library on server.
Optional parameters:    output_format { dict, json }
Output: array'

def get_library_labels(self, section_id='', output_format=''):

    uri = (('/library/sections/' + section_id) + '/label')
    request = self.request_handler.make_request(uri=uri, proto=self.protocol, request_type='GET', output_format=output_format)
    return request
