code: public File getMinifiedFile(File file) {
          File output = getOutputFile(file);
          return new File(output.getParentFile().getAbsoluteFile(),
                  output.getName().replace(".js", googleClosureMinifierSuffix + ".js"));
      }
docs: Computes the file object for the minified version of the given file. The given file must be a '.js' file.
  
  @param file the file
  @return the associated minified file