text: #import "EntityType.h"
  #import <Foundation/Foundation.h>
  #import "DataInput.h"
  #import "DataOutput.h"
  
  
  // Unique designation of a group of entities contained in the isGroupOfPdu. Represents a group of entities rather than a single entity. Section 6.2.43
  
  // Copyright (c) 2007-2009, MOVES Institute, Naval Postgraduate School. All rights reserved. 
  //
  // @author DMcG
  
  @interface  GroupIdentifier: NSObject
  {
    /** Simulation address (site and application number) */
    EntityType *simulationAddress; 
  
    /** group number */
    unsigned short groupNumber; 
  
  }
  
  @property(readwrite, retain) EntityType* simulationAddress; 
  @property(readwrite, assign) unsigned short groupNumber; 
  
  -(id)init; // Initializer
  -(void)dealloc;
  -(void)marshalUsingStream:(DataOutput*) dataStream;
  -(void)unmarshalUsingStream:(DataInput*) dataStream;
  
  -(int)getMarshalledSize;
  
  @end
  
  // Copyright (c) 1995-2009 held by the author(s).  All rights reserved.
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions
  //  are met:
  // 
  //  * Redistributions of source code must retain the above copyright
  // notice, this list of conditions and the following disclaimer.
  // * Redistributions in binary form must reproduce the above copyright
  // notice, this list of conditions and the following disclaimer
  // in the documentation and/or other materials provided with the
  // distribution.
  // * Neither the names of the Naval Postgraduate School (NPS)
  //  Modeling Virtual Environments and Simulation (MOVES) Institute
  // (http://www.nps.edu and http://www.MovesInstitute.org)
  // nor the names of its contributors may be used to endorse or
  //  promote products derived from this software without specific
  // prior written permission.
  // 
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  // COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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