String[] p = goalSpec.trim().split(":");

        if (p.length == 3) {
            // <groupId>:<artifactId>:<goal>
            gs.groupId = p[0];
            gs.artifactId = p[1];
            gs.goal = p[2];
        } else if (p.length == 4) {
            // <groupId>:<artifactId>:<version>:<goal>
            gs.groupId = p[0];
            gs.artifactId = p[1];
            gs.version = p[2];
            gs.goal = p[3];

    }

    @Override
    public Artifact createArtifact(String groupId, String artifactId, String version, String packaging) {
        return createArtifact(groupId, artifactId, version, null, packaging);
    }

    @Override
    public Artifact createArtifact(String groupId, String artifactId, String version, String scope, String type) {
        return new DefaultArtifact(groupId, artifactId, version, scope, type, null, new TestArtifactHandler(type));

  child.project.url.inherit.append.path="false">
  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>inheritance</groupId>
    <artifactId>parent</artifactId>
    <version>11-SNAPSHOT</version>
  </parent>

  <groupId>inheritance</groupId>
  <artifactId>inheritance</artifactId>
  <version>11-SNAPSHOT</version>
  <name>Model urls inheritance test child</name>

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>

  <groupId>org.apache.maven.its.mng1995</groupId>
  <artifactId>test1</artifactId>
  <version>1.0</version>

  <name>Maven Integration Test :: MNG-1995</name>
  <description>

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

<project>
  <parent>
    <artifactId>p4</artifactId>
    <groupId>maven.t02</groupId>
    <version>1.0</version>
  </parent>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven.t02</groupId>
  <artifactId>p5</artifactId>
  <packaging>jar</packaging>
  <name>p5</name>
  <version>1.0</version>

under the License.
-->

<project>
  <modelVersion>4.0.0</modelVersion>
  <artifactId>aid</artifactId>
  <groupId>gid</groupId>
  <version>0.1</version>

  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>test</groupId>
        <artifactId>a</artifactId>
        <version>0.1</version>
        <scope>import</scope>
        <type>pom</type>

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

<plugin>
  <description>plugin-description</description>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-jar-plugin</artifactId>
  <version>2.3-SNAPSHOT</version>
  <goalPrefix>jar</goalPrefix>
  <isolatedRealm>false</isolatedRealm>
  <inheritedByDefault>true</inheritedByDefault>

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>inheritance</groupId>
  <artifactId>child</artifactId>
  <version>12-SNAPSHOT</version>

  <!-- name is not inherited, but description is -->
  <description>Model inheritance description</description>

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

<project>
  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>org.apache.maven.its.mng</groupId>
    <artifactId>parent</artifactId>
    <version>0.1</version>
  </parent>

  <!-- while groupId and version are inherited, artifactId is not and must be specified -->

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

<project>
  <parent>
    <artifactId>p0</artifactId>
    <groupId>maven.t03</groupId>
    <version>1.0</version>
  </parent>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven.t03</groupId>
  <artifactId>p1</artifactId>
  <packaging>pom</packaging>
  <name>p1</name>
  <version>1.0</version>
  <scm>
    <url>scm-url</url>
  </scm>