code: func (req *Request) ResetBody() {
  	req.RemoveMultipartFormFiles()
  	req.closeBodyStream()
  	if req.body != nil {
  		if req.keepBodyBuffer {
  			req.body.Reset()
  		} else {
  			requestBodyPool.Put(req.body)
  			req.body = nil
  		}
  	}
  }
docs: // ResetBody resets request body.