Facebook.fan_count
You're seeing just the function
fan_count, go back to Facebook module for more information.
Specs
fan_count(page_id(), access_token()) :: resp()
Get the count of fans for the provided page_id/0
Example
iex> Facebook.fan_count("CocaColaMx", "<Access Token>")
{:ok, %{"fan_count" => fan_count, "id" => id}}See: https://developers.facebook.com/docs/graph-api/reference/page/