func (ctx *RequestCtx) WriteString(s string) (int, error) {
	ctx.Response.AppendBodyString(s)
	return len(s), nil
}
func (ctx *RequestCtx) WriteString(s string) (int, error) {
	ctx.Response.AppendBodyString(s)
	return len(s), nil
}
func ( ctx * RequestCtx ) WriteString ( s string ) ( int , error ) { ctx . Response . AppendBodyString ( s ) return len ( s ) , nil }
// WriteString appends s to response body.
WriteString appends s to response body .