/*
        Dependency dep1 = new Dependency();
        dep1.setGroupId( "test" );
        dep1.setArtifactId( "test-artifact" );
        dep1.setVersion( "1" );
        dep1.setType( "jar" );

        Exclusion exc = new Exclusion();
        exc.setGroupId( "test" );
        exc.setArtifactId( "test-artifact3" );

        dep1.addExclusion( exc );

            model.setModelVersion("4.0.0");
            model.setGroupId(groupId);
            model.setArtifactId(artifactId);
            model.setVersion(version);
            model.setBuild(new Build());
            project = new MavenProject(model);
        }

        public ProjectBuilder setGroupId(String groupId) {
            project.setGroupId(groupId);
            return this;
        }

    public void mergeGroupId()
    {
        Model target = new Model();
        target.setGroupId( "TARGET" );

        Model source = new Model();
        source.setGroupId( "SOURCE" );

        modelMerger.merge( target, source, true, null );
        assertThat( target.getGroupId(), is( "SOURCE" ) );

        target.setGroupId( "TARGET" );
        modelMerger.merge( target, source, false, null );

    //
    // ----------------------------------------------------------------------

    public PluginDescriptor() {}

    public PluginDescriptor(PluginDescriptor original) {
        this.setGroupId(original.getGroupId());
        this.setArtifactId(original.getArtifactId());
        this.setVersion(original.getVersion());
        this.setGoalPrefix(original.getGoalPrefix());

    }

    /** {@inheritDoc} */
    public void selectVersion(String version) {
        artifact.selectVersion(version);
    }

    /** {@inheritDoc} */
    public void setGroupId(String groupId) {
        artifact.setGroupId(groupId);
    }

    /** {@inheritDoc} */
    public void setArtifactId(String artifactId) {
        artifact.setArtifactId(artifactId);
    }

    /** {@inheritDoc} */

        request.setPom(project.getModel());

        try {
            PluginPrefixResult result = pluginPrefixResolver.resolve(request);

            Plugin plugin = new Plugin();
            plugin.setGroupId(result.getGroupId());
            plugin.setArtifactId(result.getArtifactId());

            return plugin;
        } catch (NoPluginFoundForPrefixException e) {
            return null;
        }
    }

        // merge implicitly assumes that merge is only called on the same GAV and does not perform any validation here!
        Metadata source = new Metadata();
        source.setArtifactId("source-artifact");
        source.setGroupId("source-group");
        source.setVersion("2.0");
        assertFalse(target.merge(source));
        assertEquals("myArtifact", target.getArtifactId());
        assertEquals("myGroup", target.getGroupId());

        assertEquals(groupId + ":" + artifactId + ":" + type + ":" + classifier, artifact.getDependencyConflictId());
    }

    @Test
    void testGetDependencyConflictIdNullGroupId() {
        artifact.setGroupId(null);
        assertEquals(null + ":" + artifactId + ":" + type + ":" + classifier, artifact.getDependencyConflictId());
    }

    @Test
    void testGetDependencyConflictIdNullClassifier() {

            init( af );
        }
        */
    }
    // ------------------------------------------------------------------
    //    public void init( ArtifactMetadata af )
    //    {
    //        setGroupId( af.getGroupId() );
    //        setArtifactId( af.getArtifactId() );
    //        setVersion( af.getVersion() );
    //        setType( af.getType() );
    //        setScope( af.getScope() );

    String version;
    String classifier;
    String type;
    String scope;

    transient Object datum;

    public String getGroupId() {
        return groupId;
    }

    public void setGroupId(String groupId) {
        this.groupId = groupId;
    }

    public String getArtifactId() {
        return artifactId;
    }

    public void setArtifactId(String artifactId) {