code: def get_agent_keys(logger=None):
          
          paramiko_agent = paramiko.Agent()
          agent_keys = paramiko_agent.get_keys()
          if logger:
              logger.info('{0} keys loaded from agent'.format(len(agent_keys)))
          return list(agent_keys)
docs: Load public keys from any available SSH agent
  
          Arguments:
              logger (Optional[logging.Logger])
  
          Return:
              list