code: def load(obj, env=None, silent=None, key=None):
      
  
      client = get_client(obj)
      env_list = _get_env_list(obj, env)
      for env in env_list:
          path = "/".join([obj.VAULT_PATH_FOR_DYNACONF, env]).replace("//", "/")
          data = client.read(path)
          if data:
              # There seems to be a data dict within a data dict,
              # extract the inner data
              data = data.get("data", {}).get("data", {})
          try:
              if data and key:
                  value = parse_conf_data(data.get(key), tomlfy=True)
                  if value:
                      obj.logger.debug(
                          "vault_loader: loading by key: %s:%s (%s:%s)",
                          key,
                          "****",
                          IDENTIFIER,
                          path,
                      )
                      obj.set(key, value)
              elif data:
                  obj.logger.debug(
                      "vault_loader: loading: %s (%s:%s)",
                      list(data.keys()),
                      IDENTIFIER,
                      path,
                  )
                  obj.update(data, loader_identifier=IDENTIFIER, tomlfy=True)
          except Exception as e:
              if silent:
                  if hasattr(obj, "logger"):
                      obj.logger.error(str(e))
                  return False
              raise
docs: Reads and loads in to "settings" a single key or all keys from vault
  
      :param obj: the settings instance
      :param env: settings env default='DYNACONF'
      :param silent: if errors should raise
      :param key: if defined load a single key, else load all in env
      :return: None