def announce_completed(self):
        with self._upload_complete_condition:
            self._state = self._COMPLETED
            self._upload_complete_condition.notifyAll()
Tests that avail_sizes returns an empty dictionary.
dataset/ETHPy150Open aws/aws-cli/awscli/customizations/s3/tasks.py/MultipartUploadContext.announce_completed--crossover with--dataset/ETHPy150Open saltstack/salt/tests/unit/cloud/clouds/dimensiondata_test.py/DimensionDataTestCase.test_avail_sizes