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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_firmware_manifest(self, manifest_id):
 """Get manifest with provided manifest_id. :param str manifest_id: ID of manifest to retrieve (Required) :return: FirmwareManifest """

        api = self._get_api(update_service.DefaultApi)
        return FirmwareManifest(api.firmware_manifest_retrieve(manifest_id=manifest_id))