def METHOD_NAME(self):
    # Loop through the headers from our request, and decide which ones
    # we should pass through upstream. Currently, our 'Referer' header is
    # the main one we are interested in, since this can help us debug which
    # grafana dashboard is responsible for the query.
    return {
        self.proxy_headers[k]: self.request.META[k]
        for k in self.proxy_headers
        if k in self.request.META
    }