code: def alias(self, aliases, stats):
          
          login = email = None
          if stats is None:
              return
          # Attempt to use alias directly from the config section
          try:
              config = dict(Config().section(stats))
              try:
                  email = config["email"]
              except KeyError:
                  pass
              try:
                  login = config["login"]
              except KeyError:
                  pass
          except (ConfigFileError, NoSectionError):
              pass
          # Check for aliases specified in the email string
          if aliases is not None:
              try:
                  aliases = dict([
                      re.split(r"\s*:\s*", definition, 1)
                      for definition in re.split(r"\s*;\s*", aliases.strip())])
              except ValueError:
                  raise ConfigError(
                      "Invalid alias definition: '{0}'".format(aliases))
              if stats in aliases:
                  if "@" in aliases[stats]:
                      email = aliases[stats]
                  else:
                      login = aliases[stats]
          # Update login/email if alias detected
          if email is not None:
              self.email = email
              log.info("Using email alias '{0}' for '{1}'".format(email, stats))
              if login is None:
                  login = email.split("@")[0]
          if login is not None:
              self.login = login
              log.info("Using login alias '{0}' for '{1}'".format(login, stats))
docs: Apply the login/email alias if configured.