def _read_segment_file(self, data, idx, fi, start, stop, cals, mult):
        raise NotImplementedError
Return the length of str when it is encoded with body quopri.
dataset/ETHPy150Open mne-tools/mne-python/mne/io/base.py/_BaseRaw._read_segment_file--crossover with--dataset/ETHPy150Open babble/babble/include/jython/Lib/email/quoprimime.py/body_quopri_len