WeChat.CardManaging.modify_card_stock

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

modify_card_stock(client, card_id, change_count)

Specs

modify_card_stock(
  WeChat.client(),
  WeChat.Card.card_id(),
  change_count :: integer()
) :: WeChat.response()

修改库存 - 官方文档