docs: def _append_value(self, value, _file, _name):
          """Call this function to write contents.
  
          Keyword arguments:
              * value - dict, content to be dumped
              * _file - FileIO, output file
              * _name - str, name of current content dict
  
          """
          _tabs = '\t' * self._tctr
          _cmma = ',\n' if self._vctr[self._tctr] else ''
          _keys = '{cmma}{tabs}"{name}" :'.format(cmma=_cmma, tabs=_tabs, name=_name)
  
          _file.seek(self._sptr, os.SEEK_SET)
          _file.write(_keys)
  
          self._vctr[self._tctr] += 1
          self._append_object(value, _file)