WeChat.Comment.delete_reply

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

delete_reply(client, msg_data_id, user_comment_id, index \\ 0)

Specs

delete_reply(
  WeChat.client(),
  msg_data_id(),
  user_comment_id(),
  index :: integer()
) :: WeChat.response()

删除回复 - 官方文档