Bug 279452 [Compatibility] Parameterized command mechanism support
Parameterized commands like showView need to be able to access their parameters (like the view ID) PW
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/internal/application/MHandledItemImpl.java
*/
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
			case ApplicationPackage.MHANDLED_ITEM__COMMAND:
				setCommand((MCommand)null);
				return;
			case ApplicationPackage.MHANDLED_ITEM__MENU:
				setMenu((MMenu)null);
				return;
		}
		super.eUnset(featureID);
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case ApplicationPackage.MHANDLED_ITEM__COMMAND:
				return command != null;
			case ApplicationPackage.MHANDLED_ITEM__MENU:
				return menu != null;
		}
		return super.eIsSet(featureID);
	}
}