Bug 316298 [Compatibility] Support o.e.ui.menus visibleWhen
We need support in MCoreExpression for entire expressions created by the WorkbenchMenuService. They don't often use ReferenceExpressions to core expression definitions. PW
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/application/ui/impl/UiPackageImpl.java
public EAttribute getDirtyable_Dirty() {
		return (EAttribute)dirtyableEClass.getEStructuralFeatures().get(0);
	}
	/**
	 * Returns the meta object for class '{@link org.eclipse.e4.ui.model.application.ui.MInput <em>Input</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the meta object for class '<em>Input</em>'.
	 * @see org.eclipse.e4.ui.model.application.ui.MInput
	 * @generated
	 */
	public EClass getInput() {
		return inputEClass;
	}
	/**
	 * Returns the meta object for the attribute '{@link org.eclipse.e4.ui.model.application.ui.MInput#getInputURI <em>Input URI</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the meta object for the attribute '<em>Input URI</em>'.
	 * @see org.eclipse.e4.ui.model.application.ui.MInput#getInputURI()
	 * @see #getInput()
	 * @generated
	 */
	public EAttribute getInput_InputURI() {
		return (EAttribute)inputEClass.getEStructuralFeatures().get(0);
	}
	/**
	 * Returns the meta object for class '{@link org.eclipse.e4.ui.model.application.ui.MUIElement <em>UI Element</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->