'Return a readable file-like object for resource_name.'

def get_resource_stream(self, manager, resource_name):

    overrides = self._get_overrides()
    if (overrides is not None):
        stream = overrides.get_stream(resource_name)
        if (stream is not None):
            return stream
    return pkg_resources.DefaultProvider.get_resource_stream(self, manager, resource_name)
