<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven-test</groupId>
  <artifactId>t09-c</artifactId>
  <packaging>jar</packaging>
  <version>1.0</version>

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven-test</groupId>
  <artifactId>maven-test-d</artifactId>
  <packaging>jar</packaging>
  <version>1.1</version>

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven</groupId>
  <artifactId>p0</artifactId>
  <packaging>pom</packaging>
  <name>p0</name>
  <version>1.0</version>
  <organization>
    <name>Codehaus</name>
  </organization>

     *
     * @param artifactId an artifact id
     * @deprecated use {@code META-INF/maven/extension.xml} to define artifacts exported by Maven core and plugin
     *             extensions.
     */
    void excludeArtifact(String artifactId);

    Set<String> getCoreArtifactExcludes();

<?xml version="1.0" encoding="UTF-8"?>
<metadata>
  <groupId>org.apache.maven.its</groupId>
  <artifactId>b</artifactId>
  <version>0.1</version>
  <versioning>
    <versions>
      <version>0.1</version>
    </versions>
    <lastUpdated>20091023222817</lastUpdated>
  </versioning>

KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
-->

<project>
  <modelVersion>4.0.0</modelVersion>
  <artifactId>bar</artifactId>
  <version>99.44</version>
  <packaging>bleh</packaging>

specific language governing permissions and limitations
under the License.
-->

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>foo</groupId>
  <artifactId>bar</artifactId>
  <version>99.44</version>
  <packaging></packaging>

        //

        String groupId = getGroupId(candidateModel);
        String artifactId = candidateModel.getArtifactId();

        if (groupId == null
                || !groupId.equals(parent.getGroupId())
                || artifactId == null
                || !artifactId.equals(parent.getArtifactId())) {
            StringBuilder buffer = new StringBuilder(256);

     */
    @Nonnull
    ArtifactCoordinates createArtifactCoordinates(String groupId, String artifactId, String version, String extension);

    /**
     * Shortcut for {@code getService(ArtifactFactory.class).create(...)}.
     *
     * @param groupId the group identifier, or {@code null} is unspecified
     * @param artifactId the artifact identifier, or {@code null} is unspecified

specific language governing permissions and limitations
under the License.
-->

<project>
  <modelVersion>4.0.0</modelVersion>

  <parent>
    <!-- all fields missing -->
  </parent>

  <artifactId>aid</artifactId>
  <groupId>gid</groupId>
  <version>0.1</version>