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plug lib plug head.ex
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lib/plug/head.ex 

defmodule Plug.Head do

  @moduledoc """

  A Plug to convert `HEAD` requests to `GET` requests.



  ## Examples



      Plug.Head.call(conn, [])

  """



  @behaviour Plug



  alias Plug.Conn



  def init([]), do: []



  def call(%Conn{method: "HEAD"} = conn, []), do: %{conn | method: "GET"}

  def call(conn, []), do: conn

end