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