.reduce(false, Boolean::logicalOr);
    }

    private static class BuildContainer {
        final Element element;
        final String sectionName;

        BuildContainer(Element element, String sectionName) {
            this.element = element;
            this.sectionName = sectionName;
        }
    }

import static eu.maveniverse.domtrip.maven.MavenPomElements.Elements.BUILD;
import static eu.maveniverse.domtrip.maven.MavenPomElements.Elements.EXECUTIONS;
import static eu.maveniverse.domtrip.maven.MavenPomElements.Elements.MODEL_VERSION;
import static eu.maveniverse.domtrip.maven.MavenPomElements.Elements.MODULE;
import static eu.maveniverse.domtrip.maven.MavenPomElements.Elements.MODULES;

import static eu.maveniverse.domtrip.maven.MavenPomElements.Elements.PARENT;
import static eu.maveniverse.domtrip.maven.MavenPomElements.Elements.PLUGIN;
import static eu.maveniverse.domtrip.maven.MavenPomElements.Elements.PLUGINS;
import static eu.maveniverse.domtrip.maven.MavenPomElements.Elements.PROFILE;
import static eu.maveniverse.domtrip.maven.MavenPomElements.Elements.PROFILES;

                for (Plugin element : tgt) {
                    Object key = getPluginKey(element);
                    merged.put(key, element);
                }

                Map<Object, Plugin> added = new LinkedHashMap<>();

                for (Plugin element : src) {
                    Object key = getPluginKey(element);
                    Plugin existing = merged.get(key);

     *
     * @param elements the elements to add
     * @return this {@code Builder} object
     * @throws NullPointerException if {@code elements} is null or contains a null element
     */
    @CanIgnoreReturnValue
    @Override
    public Builder<E> add(E... elements) {
      super.add(elements);
      return this;
    }

    /**

  // Query Operations

  /**
   * Returns the number of occurrences of {@code element} in this multiset.
   *
   * @param element the element to look for
   * @return the nonnegative number of occurrences of the element
   */
  @Override
  public int count(@Nullable Object element) {
    AtomicInteger existingCounter = safeGet(countMap, element);
    return (existingCounter == null) ? 0 : existingCounter.get();
  }

     *
     * @param elements the elements to add
     * @return this {@code Builder} object
     * @throws NullPointerException if {@code elements} is null or contains a null element
     */
    @CanIgnoreReturnValue
    @Override
    public Builder<E> add(E... elements) {
      super.add(elements);
      return this;
    }

    /**

    }

    /**
     * Removes an element from its parent.
     *
     * @param element the element to remove
     *
     */
    public static void removeElement(Element element) {
        Editor editor = new Editor(element.document());
        editor.removeElement(element);
    }

    /**
     * Convenience method to add GAV (groupId, artifactId, version) elements to a parent.
     *

    assertEquals("Should be able to peek() at first element", "A", peekingIterator.peek());
    assertEquals(
        "Should be able to peek() first element multiple times", "A", peekingIterator.peek());
    assertEquals(
        "next() should still return first element after peeking", "A", peekingIterator.next());

    assertEquals("Should be able to peek() at middle element", "B", peekingIterator.peek());
    assertEquals(

  public static boolean contains(Iterable<?> iterable, @Nullable Object element) {
    if (iterable instanceof Collection) {
      Collection<?> collection = (Collection<?>) iterable;
      return Collections2.safeContains(collection, element);
    }
    return Iterators.contains(iterable.iterator(), element);
  }

  /**
   * Removes, from an iterable, every element that belongs to the provided collection.
   *