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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_container_streaming_uri(self, container):
 """ Returns the URI for streaming content, or None if CDN is not enabled. """

        resp, resp_body = self.api.cdn_request("/%s" %
                utils.get_name(container), method="HEAD")
        return resp.headers.get("x-cdn-streaming-uri")