Delegate Segment.child_spec/1 to adapter

Author: mmartinson

lib/segment.ex

@@ -164,17 +164,16 @@ defmodule Segment do
   By default if nothing is configured it will start `Segment.Analytics.Batcher`
   """
   @spec start_link(String.t()) :: GenServer.on_start()
-  def start_link(api_key) do
-    @service.start_link(api_key)
-  end
+  defdelegate start_link(api_key), to: @service
 
   @doc """
   Start the configured GenServer for handling Segment events with the Segment HTTP Source API Write Key and a custom Tesla Adapter.
 
   By default if nothing is configured it will start `Segment.Analytics.Batcher`
   """
   @spec start_link(String.t(), Telsa.adapter()) :: GenServer.on_start()
-  def start_link(api_key, adapter) do
-    @service.start_link(api_key, adapter)
-  end
+  defdelegate start_link(api_key, adapter), to: @service
+
+  @spec child_spec(map()) :: map()
+  defdelegate child_spec(opts), to: @service
 end