OptionalLabel.h

#ifndef UTIL_OPTIONAL_LABEL_H
#define UTIL_OPTIONAL_LABEL_H

/*
* Util Package - C++ Utilities for Scientific Computation
*
* Copyright 2010 - 2017, The Regents of the University of Minnesota
* Distributed under the terms of the GNU General Public License.
*/

#include <util/param/Label.h>

namespace Util
{

   class OptionalLabel  : public Label
   {

   public:

      OptionalLabel();

      explicit OptionalLabel(std::string string);

      explicit OptionalLabel(const char* string);

      OptionalLabel(const OptionalLabel& other);

      virtual ~OptionalLabel();

   };

} 
#endif