docs: def send_message(self, body, to, quiet=False, html_body=None):
          """Send a message to a single member"""
          if to.get('MUTED'):
              to['QUEUED_MESSAGES'].append(body)
          else:
              if not quiet:
                  logger.info('message on %s to %s: %s' % (self.name, to['JID'], body))
  
              message = xmpp.protocol.Message(to=to['JID'], body=body, typ='chat')
              if html_body:
                  html = xmpp.Node('html', {'xmlns': 'http://jabber.org/protocol/xhtml-im'})
                  html.addChild(node=xmpp.simplexml.XML2Node("<body xmlns='http://www.w3.org/1999/xhtml'>" + html_body.encode('utf-8') + "</body>"))
                  message.addChild(node=html)
  
              self.client.send(message)