def get_time_zone(self):
        raise NotImplementedError("Subclasses of CommCareMobileContactMixin must implement method get_time_zone().")
Parses `POTFILES.in`-like file and returns list of extracted file names.
dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/sms/mixin.py/CommCareMobileContactMixin.get_time_zone--crossover with--dataset/ETHPy150Open kayhayen/Nuitka/nuitka/build/inline_copy/lib/scons-2.3.2/SCons/Tool/xgettext.py/_scan_xgettext_from_files