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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_serialization_context(self, driver_id):
 """Get the SerializationContext of the driver that this worker is processing. Args: driver_id: The ID of the driver that indicates which driver to get the serialization context for. Returns: The serialization context of the given driver. """

        # This function needs to be proctected by a lock, because it will be
        # called by`register_class_for_serialization`, as well as the import
        # thread, from different threads. Also, this function will recursively
        # call itself, so we use RLock here.
        with self.lock:
            if driver_id not in self.serialization_context_map:
                _initialize_serialization(driver_id)
            return self.serialization_context_map[driver_id]