def METHOD_NAME(self, session):
    for key in self.metadata["db"]:
        self.tasks.extend(
            [
                session.get(f"{self.mirror}/{key}/{year}.json")
                for year in self.metadata["db"][key]
            ]
        )
        if self.is_signed:
            self.tasks.extend(
                [
                    session.get(f"{self.mirror}/{key}/{year}.asc")
                    for year in self.metadata["db"][key]
                ]
            )