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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 compute_threat_list_diff( self, threat_type, constraints, version_token=None, retry=google.api_core.gapic_v1.method.DEFAULT, timeout=google.api_core.gapic_v1.method.DEFAULT, metadata=None, ):
 """ Gets the most recent threat list diffs. Example: Args: threat_type (~google.cloud.webrisk_v1beta1.types.ThreatType):
 Required. The ThreatList to update. constraints (Union[dict, ~google.cloud.webrisk_v1beta1.types.Constraints]):
 The constraints associated with this request. If a dict is provided, it must be of the same form as the protobuf message :class:`~google.cloud.webrisk_v1beta1.types.Constraints` version_token (bytes):
 The current version token of the client for the requested list (the client version that was received from the last successful diff). 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.webrisk_v1beta1.types.ComputeThreatListDiffResponse` 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 "compute_threat_list_diff" not in self._inner_api_calls:
            self._inner_api_calls[
                "compute_threat_list_diff"
            ] = google.api_core.gapic_v1.method.wrap_method(
                self.transport.compute_threat_list_diff,
                default_retry=self._method_configs["ComputeThreatListDiff"].retry,
                default_timeout=self._method_configs["ComputeThreatListDiff"].timeout,
                client_info=self._client_info,
            )

        request = webrisk_pb2.ComputeThreatListDiffRequest(
            threat_type=threat_type,
            constraints=constraints,
            version_token=version_token,
        )
        return self._inner_api_calls["compute_threat_list_diff"](
            request, retry=retry, timeout=timeout, metadata=metadata
        )