pause() {
        // Ensure there is content being streamed before pausing
        // Ensure that the stream is currently not paused before pausing
        if (!this._paused) {
            this._paused = true;
            this._raw_response.pause();
            if (this._readable) return this._super_pause();
        }
        return this;
    }
Pauses the current request and flow of incoming body data.
@returns {Request}