code: def _convertEntities(self, match):
          
          x = match.group(1)
          if self.convertHTMLEntities and x in name2codepoint:
              return unichr(name2codepoint[x])
          elif x in self.XML_ENTITIES_TO_SPECIAL_CHARS:
              if self.convertXMLEntities:
                  return self.XML_ENTITIES_TO_SPECIAL_CHARS[x]
              else:
                  return u'&%s;' % x
          elif len(x) > 0 and x[0] == '#':
              # Handle numeric entities
              if len(x) > 1 and x[1] == 'x':
                  return unichr(int(x[2:], 16))
              else:
                  return unichr(int(x[1:]))
  
          elif self.escapeUnrecognizedEntities:
              return u'&amp;%s;' % x
          else:
              return u'&%s;' % x
docs: Used in a call to re.sub to replace HTML, XML, and numeric
          entities with the appropriate Unicode characters. If HTML
          entities are being converted, any unrecognized entities are
          escaped.