code: /*--------------------------------------------------------------*
    Copyright (C) 2006-2015 OpenSim Ltd.
  
    This file is distributed WITHOUT ANY WARRANTY. See the file
    'License' for details on this and other legal matters.
  *--------------------------------------------------------------*/
  
  package org.omnetpp.ned.model.interfaces;
  
  import org.omnetpp.ned.model.DisplayString;
  import org.omnetpp.ned.model.INedElement;
  
  
  /**
   * Interface for NED model objects that provide a display string (i.e. have a visual appearance).
   *
   * @author rhornig
   */
  public interface IHasDisplayString extends INedElement {
      /**
       * Returns the display string object. The display string object can be modified
       * by clients, and it is automatically kept consistent both ways with the underlying
       * NedElement (a LiteralElement) that stores the value for the "@display()" NED property.
       * The fallback chain for the display string is automatically kept up to date as well.
       * Any change in the returned DisplayString object (e.g. calling a set(...) method)
       * will trigger a displayStringChanged() notification.
       */
      public DisplayString getDisplayString();
  }