Bug 320788 [Model] The model misses the possibility to define mnemonics for Menu-Elements
It looks like we forgot to add mnemonics to the Menu-Element like we have one in the MenuItem
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/application/ui/menu/impl/MenuPackageImpl.java
createEAttribute(itemEClass, ITEM__TYPE);
		handledItemEClass = createEClass(HANDLED_ITEM);
		createEReference(handledItemEClass, HANDLED_ITEM__COMMAND);
		createEAttribute(handledItemEClass, HANDLED_ITEM__WB_COMMAND);
		createEReference(handledItemEClass, HANDLED_ITEM__PARAMETERS);
		menuElementEClass = createEClass(MENU_ELEMENT);
		menuItemEClass = createEClass(MENU_ITEM);
		createEAttribute(menuItemEClass, MENU_ITEM__MNEMONICS);
		menuSeparatorEClass = createEClass(MENU_SEPARATOR);
		menuEClass = createEClass(MENU);
		createEAttribute(menuEClass, MENU__ENABLED);
		menuContributionEClass = createEClass(MENU_CONTRIBUTION);
		createEAttribute(menuContributionEClass, MENU_CONTRIBUTION__POSITION_IN_PARENT);
		createEAttribute(menuContributionEClass, MENU_CONTRIBUTION__PARENT_ID);
		popupMenuEClass = createEClass(POPUP_MENU);
		directMenuItemEClass = createEClass(DIRECT_MENU_ITEM);
		handledMenuItemEClass = createEClass(HANDLED_MENU_ITEM);
		toolItemEClass = createEClass(TOOL_ITEM);
		createEReference(toolItemEClass, TOOL_ITEM__MENU);
		toolBarEClass = createEClass(TOOL_BAR);
		toolBarElementEClass = createEClass(TOOL_BAR_ELEMENT);
		toolControlEClass = createEClass(TOOL_CONTROL);
		handledToolItemEClass = createEClass(HANDLED_TOOL_ITEM);
		directToolItemEClass = createEClass(DIRECT_TOOL_ITEM);
		toolBarSeparatorEClass = createEClass(TOOL_BAR_SEPARATOR);
		menuContributionsEClass = createEClass(MENU_CONTRIBUTIONS);
		createEReference(menuContributionsEClass, MENU_CONTRIBUTIONS__MENU_CONTRIBUTIONS);
		renderedMenuEClass = createEClass(RENDERED_MENU);
		createEAttribute(renderedMenuEClass, RENDERED_MENU__CONTRIBUTION_MANAGER);
		renderedToolBarEClass = createEClass(RENDERED_TOOL_BAR);