code: def htmlNodeDumpFileFormat(self, out, cur, encoding, format):
          
          if cur is None: cur__o = None
          else: cur__o = cur._o
          ret = libxml2mod.htmlNodeDumpFileFormat(out, self._o, cur__o, encoding, format)
          return ret
docs: Dump an HTML node, recursive behaviour,children are printed
            too.  TODO: if encoding == None try to save in the doc
             encoding