docs: public static void registerSmbURLHandler() {
          String ver, pkgs;
  
          ver = System.getProperty( "java.version" );
          if( ver.startsWith( "1.1." ) || ver.startsWith( "1.2." )) {
               throw new RuntimeException( "jcifs.smb1-0.7.0b4+ requires Java 1.3 or above. You are running " + ver );
          }
          pkgs = System.getProperty( "java.protocol.handler.pkgs" );
          if( pkgs == null ) {
              System.setProperty( "java.protocol.handler.pkgs", "jcifs.smb1" );
          } else if( pkgs.indexOf( "jcifs.smb1" ) == -1 ) {
              pkgs += "|jcifs.smb1";
              System.setProperty( "java.protocol.handler.pkgs", pkgs );
          }
      }