def normalize(obj) when is_map(obj), do: Activity.get_by_ap_id(obj["id"])
def normalize(ap_id) when is_binary(ap_id), do: Activity.get_by_ap_id(ap_id)
def normalize(_), do: nil
def get_in_reply_to_activity(%Activity{data: %{"object" => %{"inReplyTo" => ap_id}}}) do
def normalize(obj) when is_map(obj), do: Activity.get_by_ap_id(obj["id"])
def normalize(ap_id) when is_binary(ap_id), do: Activity.get_by_ap_id(ap_id)
def normalize(_), do: nil
def get_in_reply_to_activity(%Activity{data: %{"object" => %{"inReplyTo" => ap_id}}}) do