   ## Example
 
       # In ~/.iex.exs
-      use_if_available Phoenix.HTML
+      use_if_available(Phoenix.HTML)
 
   """
   @doc since: "1.7.0"

  ## Example

      # In ~/.iex.exs
      import_if_available Ecto.Query

  """
  defmacro import_if_available(quoted_module, opts \\ []) do

      value = 13

      # in the shell
      iex(1)> import_file("~/file.exs")
      13
      iex(2)> value
      13
