def _set_content(self, value):
        super(SimpleTemplateResponse, self)._set_content(value)
        self._is_rendered = True
`FlockerScriptRunner._parse_options` catches `usage.UsageError`
dataset/ETHPy150Open adieu/django-nonrel/django/template/response.py/SimpleTemplateResponse._set_content--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/common/test/test_script.py/FlockerScriptRunnerParseOptionsTests.test_parse_options_usage_error