String str1 = request.getResumeFrom();
        if (properties.containsKey(REMAINING_PROJECTS) && !(str1 != null && !str1.isEmpty())) {
            String propertyValue = properties.getProperty(REMAINING_PROJECTS);
            Stream.of(propertyValue.split(PROPERTY_DELIMITER))
                    .filter(str -> !str.isEmpty())
                    .forEach(request.getProjectActivation()::activateOptionalProjectNonRecursive);

    return delegate().entries();
  }

  @Override
  public Collection<V> get(@ParametricNullness K key) {
    return delegate().get(key);
  }

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

  @Override
  public Multiset<K> keys() {
    return delegate().keys();
  }

  @Override
  public Set<K> keySet() {
    return delegate().keySet();
  }

    return delegate().entries();
  }

  @Override
  public Collection<V> get(@ParametricNullness K key) {
    return delegate().get(key);
  }

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

  @Override
  public Multiset<K> keys() {
    return delegate().keys();
  }

  @Override
  public Set<K> keySet() {
    return delegate().keySet();
  }

      collection = ((ImmutableEnumSet<?>) collection).delegate;
    }
    return delegate.containsAll(collection);
  }

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

  @Override
  public boolean equals(@Nullable Object object) {
    if (object == this) {
      return true;
    }
    if (object instanceof ImmutableEnumSet) {

     */
    public static String concatName(final String s1, final String s2) {
        if (StringUtil.isEmpty(s1) && StringUtil.isEmpty(s2)) {
            return null;
        }
        if (!StringUtil.isEmpty(s1) && StringUtil.isEmpty(s2)) {
            return s1;
        }
        if (StringUtil.isEmpty(s1) && !StringUtil.isEmpty(s2)) {
            return s2;
        }
        return s1 + '.' + s2;
    }

     *            the type of the array elements
     * @param arrays
     *            the array
     * @return {@literal true} if the array is {@literal null} or has a length of 0
     */
    public static <T> boolean isEmpty(final T[] arrays) {
        return arrays == null || arrays.length == 0;
    }

    /**
     * Returns {@literal true} if the array is not {@literal null} and its length is not 0.
     *
     * @param <T>

            .createTestSuite());

    return suite;
  }

  public void testCreation_noArgs() {
    Multiset<String> multiset = ImmutableMultiset.of();
    assertTrue(multiset.isEmpty());
  }

  public void testCreation_oneElement() {
    Multiset<String> multiset = ImmutableMultiset.of("a");
    assertEquals(HashMultiset.create(asList("a")), multiset);
  }

    }

    private static boolean isEmpty(Object value) {
      // Put types estimated to be the most frequent first.
      if (value instanceof CharSequence) {
        return ((CharSequence) value).length() == 0;
      } else if (value instanceof Collection) {
        return ((Collection<?>) value).isEmpty();
      } else if (value instanceof Map) {
        return ((Map<?, ?>) value).isEmpty();

            // treat .X as -X for any string qualifier X
            if (!isDigit && !list.isEmpty()) {
                list.add(list = new ListItem());
                stack.push(list);
            }

            list.add(parseItem(isCombination, isDigit, version.substring(startIndex)));
        }

        while (!stack.isEmpty()) {
            list = (ListItem) stack.pop();
            list.normalize();
        }

                }

                return plan;

            } else if (phase != null && !phase.isEmpty()) {
                String forkedLifecycle = mojoDescriptor.getExecuteLifecycle();
                Lifecycle lifecycle;
                if (forkedLifecycle != null && !forkedLifecycle.isEmpty()) {
                    org.apache.maven.api.plugin.descriptor.lifecycle.Lifecycle lifecycleOverlay;
                    try {