Example.java

import java.util.function.Consumer;

public class Example {

    public static void main(String[] args) {

        Sprinkler $sprinkler = new Sprinkler();

        // modify( $sprinkler ) { setOn( true ) };
        modify($sprinkler, (s) -> s.setOn(true));

        // modify( $sprinkler ) { setOn( true ), setName(\"Sprinkler1\") };
        modify($sprinkler, (s) -> {
            s.setOn(true);
            s.setName("Sprinkler1");
        });
    }

    static <T> void modify(T o, Consumer<T> consumer) {

    }

    static class Sprinkler {

        boolean on;
        String name;

        void setOn(boolean on) {
            this.on = on;
        }

        void setName(String name) {
            this.name = name;
        }
    }
}