def Oem(self, command, timeout_ms=None, info_cb=DEFAULT_MESSAGE_CALLBACK):
    return self._SimpleCommand(
        'oem %s' % command, timeout_ms=timeout_ms, info_cb=info_cb)
projection matrix (nobs_i, nobs_i) (M in regression ?)  (JP check, guessing)
dataset/ETHPy150Open google/openhtf/openhtf/plugs/usb/fastboot_protocol.py/FastbootCommands.Oem--crossover with--dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/sandbox/panel/mixed.py/Unit.compute_P