WeChat.CardManaging.get_user_card_list

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

get_user_card_list(client, openid)

Specs

get_user_card_list(WeChat.client(), WeChat.openid()) :: WeChat.response()

获取用户已领取卡券 - 官方文档

Link to this function

get_user_card_list(client, openid, card_id)