mux.go
func (mx *Mux) Patch(pattern string, handlerFn http.HandlerFunc) {
	mx.handle(mPATCH, pattern, handlerFn)
}
func (mx *Mux) Patch(pattern string, handlerFn http.HandlerFunc) {
	mx.handle(mPATCH, pattern, handlerFn)
}
func ( mx * Mux ) Patch ( pattern string , handlerFn http . HandlerFunc ) { mx . handle ( mPATCH , pattern , handlerFn ) }
// Patch adds the route `pattern` that matches a PATCH http method to
// execute the `handlerFn` http.HandlerFunc.
Patch adds the route pattern that matches a PATCH http method to execute the handlerFn http . HandlerFunc .