docs: def get_user_creds(username, password):
      """Get username/password
  
      Use provided username and password OR in config OR blank in that order
      """
      username = utils.first_true(
          [username, config["bel_api"]["servers"]["arangodb_username"]], default=""
      )
      password = utils.first_true(
          [password, config["secrets"]["bel_api"]["servers"].get("arangodb_password")],
          default="",
      )
  
      return username, password