public final class IsStep<S> extends FilterStep<S> {

    private final P<S> predicate;

    public IsStep(final Traversal.Admin traversal, final P<S> predicate) {
        super(traversal);
        this.predicate = predicate;
    }

    @Override
    protected boolean filter(final Traverser.Admin<S> traverser) {
        return this.predicate.test(traverser.get());
    }

    @Override
    public String toString() {
        return TraversalHelper.makeStepString(this, this.predicate);
    }

    @Override
    public Set<TraverserRequirement> getRequirements() {
        return Collections.singleton(TraverserRequirement.OBJECT);
    }

    public P<S> getPredicate() {
        return this.predicate;
    }
}