def WasSuccessful(self, src):
    return src in self.manifest_filter
Ensure the task returns if a task already exists error is hit.
dataset/ETHPy150Open GoogleCloudPlatform/gsutil/gslib/copy_helper.py/Manifest.WasSuccessful--crossover with--dataset/ETHPy150Open Workiva/furious/furious/tests/test_async.py/TestAsync.test_start_hits_task_already_exists_error_error