target.setDescription( "TARGET" );

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

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

        target.setDescription( "TARGET" );
        modelMerger.merge( target, source, false, null );
        assertThat( target.getDescription(), is( "TARGET" ) );
    }

    @Test

              <exclude>org.apache.maven.model.merge.ModelMerger</exclude>
            </excludes>
          </parameter>
        </configuration>
      </plugin>
    </plugins>
  </build>