code: @Override
  	public boolean eIsSet(int featureID) {
  		switch (featureID) {
  			case XtextPackage.ASSIGNMENT__FEATURE:
  				return FEATURE_EDEFAULT == null ? feature != null : !FEATURE_EDEFAULT.equals(feature);
  			case XtextPackage.ASSIGNMENT__OPERATOR:
  				return OPERATOR_EDEFAULT == null ? operator != null : !OPERATOR_EDEFAULT.equals(operator);
  			case XtextPackage.ASSIGNMENT__TERMINAL:
  				return terminal != null;
  		}
  		return super.eIsSet(featureID);
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated