docs: def backup(self):
          """
          Does the rotating backup.
  
          :return: Method success.
          :rtype: bool
          """
  
          LOGGER.debug("> Storing '{0}' file backup.".format(self.__source))
  
          foundations.common.path_exists(self.__destination) or foundations.io.set_directory(self.__destination)
          destination = os.path.join(self.__destination, os.path.basename(self.__source))
          for i in range(self.__count - 1, 0, -1):
              sfn = "{0}.{1}".format(destination, i)
              dfn = "{0}.{1}".format(destination, i + 1)
              if foundations.common.path_exists(sfn):
                  if foundations.common.path_exists(dfn):
                      foundations.io.remove(dfn)
                  os.renames(sfn, dfn)
          foundations.common.path_exists(destination) and os.rename(destination, destination + ".1")
          foundations.io.copy(self.__source, destination)
          return True