/*
         * if ( version == null || !version.equals( parent.getVersion() ) ) { return null; }
         */

        return new ModelData(candidateSource, candidateModel);
    }

    private boolean rawChildVersionReferencesParent(String rawChildModelVersion) {
        return rawChildModelVersion.equals("${pom.version}")
                || rawChildModelVersion.equals("${project.version}")

      }
      return false;
    }

    @Override
    public boolean equals(@CheckForNull Object obj) {
      if (obj instanceof PowerSet) {
        PowerSet<?> that = (PowerSet<?>) obj;
        return inputSet.keySet().equals(that.inputSet.keySet());
      }
      return super.equals(obj);
    }

    @Override
    public int hashCode() {
      /*

 * <i>if and only if</i> {@code a.equals(b)}. If this advice is not followed, the resulting map will
 * not correctly obey its specification.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/ImmutableCollectionsExplained">immutable collections</a>.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 * @since 2.0 (implements {@code NavigableMap} since 12.0)
 */

            validateStringNotEmpty(
                    "parent.artifactId", problems, Severity.FATAL, Version.BASE, parent.getArtifactId(), parent);

            if (equals(parent.getGroupId(), m.getGroupId()) && equals(parent.getArtifactId(), m.getArtifactId())) {
                addViolation(
                        problems,
                        Severity.FATAL,
                        Version.BASE,

   * #newListMultimap}, {@link #newSetMultimap} or {@link #newSortedSetMultimap} instead, to avoid
   * very surprising behavior from {@link Multimap#equals}.
   *
   * <p>The {@code factory}-generated and {@code map} classes determine the multimap iteration
   * order. They also specify the behavior of the {@code equals}, {@code hashCode}, and {@code
   * toString} methods for the multimap and its returned views. However, the multimap's {@code get}

        Iterators.removeIf(
            list.iterator(),
            new Predicate<String>() {
              @Override
              public boolean apply(String s) {
                return s.equals("b") || s.equals("d") || s.equals("f");
              }
            }));
    assertEquals(newArrayList("a", "c", "e"), list);
    assertFalse(
        Iterators.removeIf(
            list.iterator(),

                        artifact.getId(), "Error resolving project artifact: " + e.getMessage(), e);
            }

            Path pomFile = pomArtifact.getPath();

            if (!artifact.isResolved() && "pom".equals(artifact.getType())) {
                artifact.selectVersion(pomArtifact.getVersion());
                artifact.setFile(pomFile.toFile());
                artifact.setResolved(true);
            }

      }
    }
    return result;
  }

  /**
   * Determines whether two iterators contain equal elements in the same order. More specifically,
   * this method returns {@code true} if {@code iterator1} and {@code iterator2} contain the same
   * number of elements and every element of {@code iterator1} is equal to the corresponding element
   * of {@code iterator2}.
   *