// is not a bug but a performance optimization.
        if (capabilities.isEmpty() && (component.hasMoreThanOneSelectedNodeUsingVariantAwareResolution() || capabilitiesConflictHandler.hasSeenCapability(component.getImplicitCapability()))) {
            action.execute(component.getImplicitCapability());
        } else {
            // The isEmpty check is not required, might look innocent, but Guava's performance bad for an empty immutable list

            // The file pom may not contain the modelVersion yet, as it may be set later by the
            // ModelVersionXMLFilter.
            if (m.getModelVersion() != null && !m.getModelVersion().isEmpty()) {
                validateModelVersion(problems, m.getModelVersion(), m, VALID_MODEL_VERSIONS);
            }

            validateStringNoExpression("groupId", problems, Severity.WARNING, Version.V20, m.getGroupId(), m);

                profileSelector.getActiveProfiles(request.getProfiles(), profileActivationContext, problems);

        result.setActiveExternalProfiles(activeExternalProfiles);

        if (!activeExternalProfiles.isEmpty()) {
            Properties profileProps = new Properties();
            for (Profile profile : activeExternalProfiles) {
                profileProps.putAll(profile.getProperties());
            }

        for (E e : set2) {
          if (!set1.contains(e)) {
            size++;
          }
        }
        return size;
      }

      @Override
      public boolean isEmpty() {
        return set1.isEmpty() && set2.isEmpty();
      }

      @Override
      public UnmodifiableIterator<E> iterator() {
        return new AbstractIterator<E>() {
          final Iterator<? extends E> itr1 = set1.iterator();

        calculateLauncherJvmArgs(gradleInvocation);
        gradleInvocation.args.addAll(getAllArgs());

        transformInvocation(gradleInvocation);

        if (!gradleInvocation.implicitLauncherJvmArgs.isEmpty()) {
            throw new IllegalStateException("Implicit JVM args have not been handled.");
        }

        return gradleInvocation;
    }

    protected void validateDaemonVisibility() {

    return keyOrNull(higherEntry(key));
  }

  @Override
  @CheckForNull
  public Entry<K, V> firstEntry() {
    return isEmpty() ? null : entrySet().asList().get(0);
  }

  @Override
  @CheckForNull
  public Entry<K, V> lastEntry() {
    return isEmpty() ? null : entrySet().asList().get(size() - 1);
  }

  /**
   * Guaranteed to throw an exception and leave the map unmodified.
   *

    @Override
    public Collection<V2> get(@ParametricNullness final K key) {
      return transform(key, fromMultimap.get(key));
    }

    @Override
    public boolean isEmpty() {
      return fromMultimap.isEmpty();
    }

    @Override
    Set<K> createKeySet() {
      return fromMultimap.keySet();
    }

    @Override
    Multiset<K> createKeys() {