code: private static String fromFileStandardToURLStandard(File file) {
  		if (file == null) {
  			return null;
  		}
  		return fromFileStandardToURLStandard(file.getPath());
  	}
docs: Decode the given file to obtain a string representation
  which is compatible with the URL standard.
  This function was introduced to have a work around
  on the '\' character on Windows operating system.
  
  @param file the file.
  @return the string representation of the file.
  @since 6.2