def getRx(self):
        if self.buffify and self.rxLog and not self.rxLog.closed:
            return (self.rxLog.getvalue())
        return None
Overrides abstract function in stacker class. Called in Stacker.stack_derived() function. 
dataset/ETHPy150Open ioflo/ioflo/ioflo/aio/wiring.py/WireLog.getRx--crossover with--dataset/ETHPy150Open GeoscienceAustralia/agdc/examples/pqa_stacker.py/PQAStacker.derive_datasets