code: def get_authors_string(self, own_accts=None, replace_own=None):
          
          if replace_own is None:
              replace_own = settings.get('thread_authors_replace_me')
          if replace_own:
              if own_accts is None:
                  own_accts = settings.get_accounts()
              authorslist = []
              for aname, aaddress in self.get_authors():
                  for account in own_accts:
                      if account.matches_address(aaddress):
                          aname = settings.get('thread_authors_me')
                          break
                  if not aname:
                      aname = aaddress
                  if aname not in authorslist:
                      authorslist.append(aname)
              return ', '.join(authorslist)
          else:
              return self._notmuch_authors_string
docs: returns a string of comma-separated authors
          Depending on settings, it will substitute "me" for author name if
          address is user's own.
  
          :param own_accts: list of own accounts to replace
          :type own_accts: list of :class:`Account`
          :param replace_own: whether or not to actually do replacement
          :type replace_own: bool
          :rtype: str