}
  }

  private interface Equals {
    @Override
    boolean equals(@Nullable Object obj);

    @Override
    int hashCode();

    @Override
    String toString();
  }

  private static class NoDelegateToEquals implements Equals {

    private static Function<Equals, Equals> WRAPPER =
        new Function<Equals, Equals>() {
          @Override

    }

    @Override
    public boolean equals(@Nullable Object obj) {
      // In general getClass().isInstance() is bad for equals.
      // But here we fully control the subclasses to ensure symmetry.
      if (getClass().isInstance(obj)) {
        Wrapper that = (Wrapper) obj;
        return wrapped.equals(that.wrapped);
      }
      return false;
    }

    @Override

import junit.framework.AssertionFailedError;
import org.checkerframework.checker.nullness.qual.Nullable;

@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public class Helpers {
  // Clone of Objects.equal
  static boolean equal(@Nullable Object a, @Nullable Object b) {
    return a == b || (a != null && a.equals(b));
  }

  // Clone of Lists.newArrayList

   * same structural relationships as those in this network.
   *
   * <p>Thus, two networks A and B are equal if <b>all</b> of the following are true:
   *
   * <ul>
   *   <li>A and B have equal {@link #isDirected() directedness}.
   *   <li>A and B have equal {@link #nodes() node sets}.
   *   <li>A and B have equal {@link #edges() edge sets}.
   *   <li>Every edge in A and B connects the same nodes in the same direction (if any).

    @Secured({ ROLE })
    public HtmlResponse upgradeFrom(final UpgradeForm form) {
        validate(form, messages -> {}, this::asIndexHtml);
        verifyToken(this::asIndexHtml);

        if (VERSION_13_0.equals(form.targetVersion)) {
            try {
                upgradeFrom13_0();
                upgradeFrom13_1();
                upgradeFrom13_2();
                upgradeFrom13_3();
                upgradeFrom13_4();

      return target.equals(o);
    }

    @Override
    public int hashCode() {
      return target.hashCode();
    }

    @Override
    public boolean equals(@CheckForNull Object obj) {
      if (obj instanceof IsEqualToPredicate) {
        IsEqualToPredicate that = (IsEqualToPredicate) obj;
        return target.equals(that.target);
      }
      return false;
    }

        }

        return Objects.equals(a1.getGroupId(), a2.getGroupId())
                && Objects.equals(a1.getArtifactId(), a2.getArtifactId())
                && Objects.equals(a1.getType(), a2.getType())
                && Objects.equals(a1.getVersion(), a2.getVersion())
                && Objects.equals(a1.getClassifier(), a2.getClassifier())
                && Objects.equals(a1.getScope(), a2.getScope())

      return target.equals(o);
    }

    @Override
    public int hashCode() {
      return target.hashCode();
    }

    @Override
    public boolean equals(@CheckForNull Object obj) {
      if (obj instanceof IsEqualToPredicate) {
        IsEqualToPredicate that = (IsEqualToPredicate) obj;
        return target.equals(that.target);
      }
      return false;
    }

                currentList = null;
                if (currentItem != null) {
                    currentItem = null;
                    nodes.pop();
                }
                nodes.pop();
            }
            if (element.equals("dt")) {
                nodes.pop();
            }
            if (element.equals("dd")) {
                nodes.pop();
            }
        }

        if (inheritedScope == null) {
            desiredScope = scope;
        } else if (Artifact.SCOPE_TEST.equals(scope) || Artifact.SCOPE_PROVIDED.equals(scope)) {
            return null;
        } else if (Artifact.SCOPE_COMPILE.equals(scope) && Artifact.SCOPE_COMPILE.equals(inheritedScope)) {
            // added to retain compile artifactScope. Remove if you want compile inherited as runtime