1package mux23import "strings"45// ResponseWriter represents the response writer.6type ResponseWriter struct {7 output strings.Builder8}910// Write appends data to the response output.11func (rw *ResponseWriter) Write(data string) {12 rw.output.WriteString(data)13}1415// Output returns the final response output.16func (rw *ResponseWriter) Output() string {17 return rw.output.String()18}1920// TODO: func (rw *ResponseWriter) Header()...21Signatures reconstructed verbatim from vm/qfuncs — interface params keep their inline definitions.