code: public Parameter getParameter() {
  		if (parameter != null && parameter.eIsProxy()) {
  			InternalEObject oldParameter = (InternalEObject)parameter;
  			parameter = (Parameter)eResolveProxy(oldParameter);
  			if (parameter != oldParameter) {
  				if (eNotificationRequired())
  					eNotify(new ENotificationImpl(this, Notification.RESOLVE, XtextPackage.PARAMETER_REFERENCE__PARAMETER, oldParameter, parameter));
  			}
  		}
  		return parameter;
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated