Webmentions.send_webmentions

You're seeing just the function send_webmentions, go back to Webmentions module for more information.
Link to this function

send_webmentions(source_url, root_selector \\ ".h-entry")

Specs

send_webmentions(String.t(), String.t()) ::
  {:ok, [Webmentions.Response.t()]} | {:error, integer()} | {:error, String.t()}