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/CoreExpressionImpl.java
}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case UiPackageImpl.CORE_EXPRESSION__CORE_EXPRESSION_ID:
				return CORE_EXPRESSION_ID_EDEFAULT == null ? coreExpressionId != null : !CORE_EXPRESSION_ID_EDEFAULT.equals(coreExpressionId);
		}
		return super.eIsSet(featureID);
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public String toString() {
		if (eIsProxy()) return super.toString();
		StringBuffer result = new StringBuffer(super.toString());
		result.append(" (coreExpressionId: "); 
		result.append(coreExpressionId);
		result.append(')');
		return result.toString();
	}
}