@GenerateImpl
@XmlRootBinding(elementName = "sapphire-model")
public interface ISapphireModelDef extends IExecutableModelElement {

    ModelElementType TYPE = new ModelElementType(ISapphireModelDef.class);

    // *** ValueProperties ***

    @Type(base = ISModelValueProperty.class)
    @Label(standard = "Value Properties")
    @XmlListBinding(mappings = { @XmlListBinding.Mapping(element = "", type = ISModelTypedValueProperty.class) })
    ListProperty PROP_VALUE_PROPERTIES = new ListProperty(TYPE,
            "ValueProperties");

    ModelElementList<ISModelValueProperty> getValueProperties();

    // *** Method: execute ***

    @DelegateImplementation(ISapphireModelDefOpMethods.class)
    Status execute(ProgressMonitor monitor);

}

public abstract class NewElementWizard<M extends IExecutableModelElement>
        extends SapphireWizard<M> {

    public NewElementWizard(M modelElement, String wizardDefPath) {
        super(modelElement, wizardDefPath);
        setNeedsProgressMonitor(true);
    }

    public abstract void addCustomPages();

}

public class NewSapphireModelCreationWizard extends
        NewElementWizard<ISapphireModelDef> {

    public final static String ID = "org.eclipse.sapphire.ui.wizards.NewSapphireModelCreationWizard";
    private final static String WIZARD_DEF_PATH = "com.sk.contentassist.demo/org/eclipse/sapphire/ui/wizards/sapphire-model-wizards.sdef!new.sapphire.model.creation.wizard";

    private NewInterfaceWizardPage modelElementClass;

    /**
     * @param modelElement
     * @param wizardDefPath
     */
    public NewSapphireModelCreationWizard(ISapphireModelDef modelElement,
            String wizardDefPath) {
        super(modelElement, NewSapphireModelCreationWizard.WIZARD_DEF_PATH);
        addCustomPages();
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.sapphire.ui.wizards.NewElementWizard#addCustomPages()
     */
    @Override
    public void addCustomPages() {
        if (this.modelElementClass == null) {
            this.modelElementClass = new NewInterfaceWizardPage();
            super.addPage(modelElementClass);
        }

    }

}

<definition>
    <import>
        <package>org.eclipse.sapphire.model</package>
    </import>
    <wizard>
        <id>new.sapphire.model.creation.wizard</id>
        <label>New Sapphire Model</label>
        <description>This wizard will allow the creation of New Sapphire Models</description>
        <image>icons/sapphire-32.png</image>
        <page>
            <id>new-sapphire-model.valueproperties.page</id>
            <label>Value Properties</label>
            <description>Define all value properties for the model</description>
            <content>
                <property-editor>ValueProperties</property-editor>
            </content>
        </page>
    </wizard>
</definition>

<plugin>
   <extension
         point="org.eclipse.ui.newWizards">
      <category
            id="org.eclipse.sapphire.newWizards"
            name="%category.name.0">
      </category>
     <wizard
           id="org.eclipse.sapphire.ui.wizards.NewSapphireModelCreationWizard"
           category="org.eclipse.sapphire.newWizards" 
           name="New Sapphire Model" 
           icon="icons/sapphire-32.png" 
           class="org.eclipse.sapphire.ui.wizards.NewSapphireModelCreationWizard">
           <description>
              Creates new Sapphire Model Element (IModelElement)
           </description>
     </wizard>
    
   </extension>

</plugin>