def get_headers(self):
        return self.headers
check if this L{IDroneModelAppVersion} provider exists
dataset/ETHPy150Open sunlightlabs/read_FEC/fecreader/parsing/filing.py/filing.get_headers--crossover with--dataset/ETHPy150Open OrbitzWorldwide/droned/droned/lib/droned/models/app.py/AppVersion.versionExists