@classmethod
    def factory(cls, global_config, **local_config):
        def _factory(app):
            return cls(app, **local_config)
        return _factory
Set the value of a header.
dataset/ETHPy150Open nii-cloud/dodai-compute/nova/wsgi.py/Middleware.factory--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/core/servers/basehttp.py/Headers.__setitem__