docs: public static VCProjectHolder getVCProjectHolder( File inputFile, boolean isSolution )
      {
          VCProjectHolder vcProjectHolder = VCPROJECT_HOLDERS.get( inputFile );
          
          if ( vcProjectHolder == null )
          {
              vcProjectHolder = new VCProjectHolder( inputFile, isSolution, new HashMap<String, String>() );
              VCPROJECT_HOLDERS.put( inputFile, vcProjectHolder );
          }
          
          return vcProjectHolder;
      }