code: public static String getInvalidFileSizeMessage(final long maxFileSize) {
  		return String.format(I18nUtilities.format(null, InternalMessages.DEFAULT_VALIDATION_ERROR_FILE_WRONG_SIZE),
  			FileUtil.readableFileSize(maxFileSize));
  	}
docs: Returns invalid fileSize error message.
  
  @param maxFileSize allowed fileSize
  @return human readable message