resume() {
        // Ensure there is content being streamed before resuming
        // Ensure that the stream is currently paused before resuming
        if (this._paused) {
            this._paused = false;
            this._raw_response.resume();
            if (this._readable) return this._super_resume();
        }
        return this;
    }
Resumes the current request and flow of incoming body data.
@returns {Request}