def _extractPayload(self):
        if self._payloadComplete():
            remainingPayloadSize = (self._expectedPayloadSize -
                                    self._currentPayloadSize)
            self._payload.write(self._remainingData[:remainingPayloadSize])
            self._remainingData = self._remainingData[remainingPayloadSize:]
            self._currentPayloadSize = self._expectedPayloadSize
        else:
            self._payload.write(self._remainingData)
            self._currentPayloadSize += len(self._remainingData)
            self._remainingData = ""
Extracts payload information from C{self._remainingData}.
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/protocols/basic.py/NetstringReceiver._extractPayload