ChainFilter Jooby web framework

ChainFilter.java

import io.jooby.Route.Filter;
import io.jooby.Route.Handler;
import org.jetbrains.annotations.NotNull;

import java.util.ArrayList;
import java.util.List;

public class ChainFilter implements Filter {

    private final Filter chainfilter;

    public ChainFilter(List<Filter> _filters) {
        var filters = new ArrayList<>(_filters);
        chainfilter = chain(filters.removeFirst(), filters);
    }

    @Override
    public @NotNull Handler apply(@NotNull Handler next) {
        return chainfilter.then(next);
    }

    private Filter chain(Filter head, List<Filter> tails) {
        if (!tails.isEmpty()) {
            Filter filter = tails.removeFirst();
            return chain(head.then(filter), tails);
        } else {
            return head;
        }
    }

}