def _build_header(self, raw_msg, raw_headers):

        header1 = RPCRequestEndpointUnit._build_header(self, raw_msg, raw_headers)
        header2 = ProcessEndpointUnitMixin._build_header(self, raw_msg, raw_headers)

        header1.update(header2)

        return header1
Return an etree friendly xpath
dataset/ETHPy150Open ooici/pyon/pyon/ion/endpoint.py/ProcessRPCRequestEndpointUnit._build_header--crossover with--dataset/ETHPy150Open geopython/OWSLib/owslib/util.py/nspath_eval