question: @ Override public boolean eIsSet ( int featureID ) { switch ( featureID ) { case SGraphPackage . TRANSITION__TRIGGER : return trigger != null ; case SGraphPackage . TRANSITION__EFFECT : return effect != null ; case SGraphPackage . TRANSITION__PROPERTIES : return properties != null && ! properties . isEmpty ( ) ; case SGraphPackage . TRANSITION__DOCUMENTATION : return DOCUMENTATION_EDEFAULT == null ? documentation != null : ! DOCUMENTATION_EDEFAULT . equals ( documentation ) ; case SGraphPackage . TRANSITION__TARGET : return target != null ; case SGraphPackage . TRANSITION__SOURCE : return basicGetSource ( ) != null ; } return super . eIsSet ( featureID ) ; }
target:  <!-- begin-user-doc --> <!-- end-user-doc -->