Dump an HTML node, recursive behaviour,children are printed
          too.  TODO: if encoding == None try to save in the doc
           encoding

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