Bug 286678 UI model and propagation of context values: containers with variables
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/internal/application/MPartImpl.java
return;
			case ApplicationPackage.MPART__CONTEXT:
				setContext(CONTEXT_EDEFAULT);
				return;
		}
		super.eUnset(featureID);
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case ApplicationPackage.MPART__MENU:
				return menu != null;
			case ApplicationPackage.MPART__TOOL_BAR:
				return toolBar != null;
			case ApplicationPackage.MPART__POLICY:
				return POLICY_EDEFAULT == null ? policy != null : !POLICY_EDEFAULT.equals(policy);
			case ApplicationPackage.MPART__CHILDREN:
				return children != null && !children.isEmpty();
			case ApplicationPackage.MPART__ACTIVE_CHILD:
				return activeChild != null;
			case ApplicationPackage.MPART__HANDLERS:
				return handlers != null && !handlers.isEmpty();
			case ApplicationPackage.MPART__WIDGET:
				return WIDGET_EDEFAULT == null ? widget != null : !WIDGET_EDEFAULT.equals(widget);
			case ApplicationPackage.MPART__PARENT: