def read(self, size=None):
        return self._read(size, self._file.read)
Get the PE-ID for list of group_ids
dataset/ETHPy150Open babble/babble/include/jython/Lib/mailbox.py/_ProxyFile.read--crossover with--dataset/ETHPy150Open sahana/eden/modules/templates/SAMBRO/controllers.py/subscriptions._get_group_pe_id