def add(self, value):
        self.total += value
        return -value
L{Request.writeTo} uses chunked encoding to write data from the request
dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.util/src/openmdao/util/test/test_wrkpool.py/TestCase.add--crossover with--dataset/ETHPy150Open twisted/twisted/twisted/web/test/test_newclient.py/RequestTests.test_sendChunkedRequestBody