docs: public static String shortMessage( List<CompilerError> messages )
      {
          StringBuffer sb = new StringBuffer();
  
          sb.append( "Compilation failure" );
  
          if ( messages.size() == 1 )
          {
              sb.append( LS );
  
              CompilerError compilerError = (CompilerError) messages.get( 0 );
  
              sb.append( compilerError ).append( LS );
          }
          
          return sb.toString();
      }