WeChat.SubscribeMessage.get_pub_template_titles

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

get_pub_template_titles(client, ids, start \\ 0, limit \\ 30)

Specs

get_pub_template_titles(
  WeChat.client(),
  [category_id()],
  start :: non_neg_integer(),
  limit :: 1..30
) :: WeChat.response()

获取帐号所属类目下的公共模板标题 - 官方文档