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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 escalate_incident( self, incident, update_mask=None, subscriptions=None, tags=None, roles=None, artifacts=None, retry=google.api_core.gapic_v1.method.DEFAULT, timeout=google.api_core.gapic_v1.method.DEFAULT, metadata=None, ):
 """ Escalates an incident. Example: Args: incident (Union[dict, ~google.cloud.irm_v1alpha2.types.Incident]):
 The incident to escalate with the new values. If a dict is provided, it must be of the same form as the protobuf message :class:`~google.cloud.irm_v1alpha2.types.Incident` update_mask (Union[dict, ~google.cloud.irm_v1alpha2.types.FieldMask]):
 List of fields that should be updated. If a dict is provided, it must be of the same form as the protobuf message :class:`~google.cloud.irm_v1alpha2.types.FieldMask` subscriptions (list[Union[dict, ~google.cloud.irm_v1alpha2.types.Subscription]]):
 Subscriptions to add or update. Existing subscriptions with the same channel and address as a subscription in the list will be updated. If a dict is provided, it must be of the same form as the protobuf message :class:`~google.cloud.irm_v1alpha2.types.Subscription` tags (list[Union[dict, ~google.cloud.irm_v1alpha2.types.Tag]]):
 Tags to add. Tags identical to existing tags will be ignored. If a dict is provided, it must be of the same form as the protobuf message :class:`~google.cloud.irm_v1alpha2.types.Tag` roles (list[Union[dict, ~google.cloud.irm_v1alpha2.types.IncidentRoleAssignment]]):
 Roles to add or update. Existing roles with the same type (and title, for TYPE_OTHER roles) will be updated. If a dict is provided, it must be of the same form as the protobuf message :class:`~google.cloud.irm_v1alpha2.types.IncidentRoleAssignment` artifacts (list[Union[dict, ~google.cloud.irm_v1alpha2.types.Artifact]]):
 Artifacts to add. All artifacts are added without checking for duplicates. If a dict is provided, it must be of the same form as the protobuf message :class:`~google.cloud.irm_v1alpha2.types.Artifact` retry (Optional[google.api_core.retry.Retry]):
 A retry object used to retry requests. If ``None`` is specified, requests will not be retried. timeout (Optional[float]):
 The amount of time, in seconds, to wait for the request to complete. Note that if ``retry`` is specified, the timeout applies to each individual attempt. metadata (Optional[Sequence[Tuple[str, str]]]):
 Additional metadata that is provided to the method. Returns: A :class:`~google.cloud.irm_v1alpha2.types.EscalateIncidentResponse` instance. Raises: google.api_core.exceptions.GoogleAPICallError: If the request failed for any reason. google.api_core.exceptions.RetryError: If the request failed due to a retryable error and retry attempts failed. ValueError: If the parameters are invalid. """

        # Wrap the transport method to add retry and timeout logic.
        if "escalate_incident" not in self._inner_api_calls:
            self._inner_api_calls[
                "escalate_incident"
            ] = google.api_core.gapic_v1.method.wrap_method(
                self.transport.escalate_incident,
                default_retry=self._method_configs["EscalateIncident"].retry,
                default_timeout=self._method_configs["EscalateIncident"].timeout,
                client_info=self._client_info,
            )

        request = incidents_service_pb2.EscalateIncidentRequest(
            incident=incident,
            update_mask=update_mask,
            subscriptions=subscriptions,
            tags=tags,
            roles=roles,
            artifacts=artifacts,
        )
        if metadata is None:
            metadata = []
        metadata = list(metadata)
        try:
            routing_header = [("incident.name", incident.name)]
        except AttributeError:
            pass
        else:
            routing_metadata = google.api_core.gapic_v1.routing_header.to_grpc_metadata(
                routing_header
            )
            metadata.append(routing_metadata)

        return self._inner_api_calls["escalate_incident"](
            request, retry=retry, timeout=timeout, metadata=metadata
        )