def marshal(self, x):
        raise RuntimeError('test class must provide a marshal method')
A simple sitemap index can be rendered with a custom template
dataset/ETHPy150Open PythonCharmers/python-future/tests/test_future/test_buffer.py/MixinBytesBufferCommonTests.marshal--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/contrib/sitemaps/tests/http.py/HTTPSitemapTests.test_simple_sitemap_custom_index