WeChat.Account.create_qrcode

You're seeing just the function create_qrcode, go back to WeChat.Account module for more information.
Link to this function

create_qrcode(client, scene_id, action_name \\ "QR_LIMIT_SCENE", expire_seconds \\ 1800)

Specs

create_qrcode(
  WeChat.client(),
  scene_id :: String.t(),
  qrcode_action_name(),
  expire_seconds :: integer()
) :: WeChat.response()

生成二维码 - 官方文档