* constructor than to use the {@link #add(Object...)} method, as the former will
 * require less memory to store them.
 */
public class DefaultTaskDependency extends AbstractTaskDependency {
    private final ImmutableSet<Object> immutableValues;
    private Set<Object> mutableValues;
    private final TaskResolver resolver;

    public DefaultTaskDependency() {
        this(null, null);
    }