Koboo

public interface Handle {

    interface Two<T1, T2> {
        void handle(T1 item1, T2 item2);
    }

    interface Three<T1, T2, T3> {
        void handle(T1 item1, T2 item2, T3 item3);
    }

Koboo

public interface Tuple {

    static <T extends Tuple, T1, T2> T create(T1 item1, T2 item2) {
        return (T) new Two<>(item1, item2);
    }

    static <T extends Tuple, T1, T2, T3> T create(T1 item1, T2 item2, T3 item3) {
        return (T) new Three<>(item1, item2, item3);
    }

Koboo

import com.mongodb.client.model.Filters;
import org.bson.conversions.Bson;

import java.util.regex.Pattern;

public class MongoFilters {

    public static Bson eqIgn(String fieldName, String value) {
        String patternString = new StringBuilder("(?i)^").append(value).append("$").toString();
        Pattern pattern = Pattern.compile(patternString, Pattern.CASE_INSENSITIVE);