docs: def role_get(name, user=None, host=None, port=None, maintenance_db=None,
               password=None, runas=None, return_password=False):
      '''
      Return a dict with information about users of a Postgres server.
  
      Set return_password to True to get password hash in the result.
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' postgres.role_get postgres
      '''
      all_users = user_list(user=user,
                            host=host,
                            port=port,
                            maintenance_db=maintenance_db,
                            password=password,
                            runas=runas,
                            return_password=return_password)
      try:
          return all_users.get(name, None)
      except AttributeError:
          log.error('Could not retrieve Postgres role. Is Postgres running?')
          return None