http.go
func (resp *Response) BodyWriter() io.Writer {
	resp.w.r = resp
	return &resp.w
}
func (resp *Response) BodyWriter() io.Writer {
	resp.w.r = resp
	return &resp.w
}
func ( resp * Response ) BodyWriter ( ) io . Writer { resp . w . r = resp return & resp . w }
// BodyWriter returns writer for populating response body.
//
// If used inside RequestHandler, the returned writer must not be used
// after returning from RequestHandler. Use RequestCtx.Write
// or SetBodyStreamWriter in this case.
BodyWriter returns writer for populating response body . If used inside RequestHandler the returned writer must not be used after returning from RequestHandler . Use RequestCtx . Write or SetBodyStreamWriter in this case .