Bug 263090 [legacy] Load the model with commands and handlers
The legacy fragment should be able to load the commands model with commands and the handlers model with handlers. PW
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/workbench/ui/renderers/PartRenderer.java
Object newWidget = factory.createWidget(element);
			if (newWidget != null) {
				
				setFactoryFor(element, factory);
				processHandlers(element);
				if (element.getMenu() != null) {
					factory.createMenu(element, newWidget, element.getMenu());
				}
				if (element.getToolBar() != null) {
					factory.createToolBar(element, newWidget, element
							.getToolBar());
				}
				return newWidget;
			}
		}
		return null;
	}
	protected void processHandlers(MPart<?> element) {
		for (MHandler contributedHandler : element.getHandlers()) {
			if (contributedHandler.getURI() != null) {
				contributedHandler.setObject(contributionFactory.create(
						contributedHandler.getURI(), context));
			}
		}
	}
	/**
	 * Manages the relationship between a MPart<?> and its rendered Widget.