docs: def handle(self, message):
          '''Attempts to send a message to the specified destination in Slack.
          Extends Legobot.Lego.handle()
  
          Args:
              message (Legobot.Message): message w/ metadata to send.
          '''
  
          logger.debug(message)
          if Utilities.isNotEmpty(message['metadata']['opts']):
              target = message['metadata']['opts']['target']
              thread = message['metadata']['opts'].get('thread')
              # pattern = re.compile('@([a-zA-Z0-9._-]+)')
              pattern = re.compile('^@([a-zA-Z0-9._-]+)|\s@([a-zA-Z0-9._-]+)')
              matches = re.findall(pattern, message['text'])
              matches = set(matches)
              logger.debug('MATCHES!!!!   {}'.format(matches))
              for match in matches:
                  if isinstance(match, tuple):
                      if match[0] != '':
                          match = match[0]
                      else:
                          match = match[1]
                  if not match.startswith('@'):
                      match = '@' + match
                  message['text'] = message['text'].replace(
                      match,
                      '<{}>'.format(match)
                  )
  
              pattern = re.compile('#([A-Za-z0-9-]+)')
              matches = re.findall(pattern, message['text'])
              matches = set(matches)
              for match in matches:
                  channel_id = self.botThread.get_channel_id_by_name(match)
                  if channel_id:
                      message['text'] = message['text'].replace(
                          '#' + match,
                          '<#{}|{}>'.format(
                              channel_id,
                              match
                          )
                      )
  
              if (message['text'].find('<<@') != -1
                      or message['text'].find('<<#') != -1):
                  message['text'] = message['text'].replace('<<', '<')
                  message['text'] = message['text'].replace('>>', '>')
  
              if target.startswith('U'):
                  target = self.botThread.get_dm_channel(target)
              attachment = message['metadata']['opts'].get('attachment')
              if attachment:
                  text = message['metadata']['opts'].get('fallback')
                  attachment = self.build_attachment(
                      text, target, attachment, thread)
                  self.botThread.post_attachment(attachment)
              else:
                  self.botThread.slack_client.rtm_send_message(
                      target, message['text'], thread=thread)