def METHOD_NAME(self):
    if "AWS_DEFAULT_REGION" not in os.environ:
        # We need to provide a region to boto3 to avoid no region exception.
        # Which region to provide is arbitrary.
        os.environ["AWS_DEFAULT_REGION"] = "us-east-1"
    status_manager = JsonComputeFleetStatusManager("cluster-name")
    return status_manager