   where the last line is a quoted representation of
 
        [bar: nil | integer]
-    
+
   ## Documentation
 
   By default records are not documented and have `@moduledoc` set to false.


  ## Examples

      iex> round(5.5) 
      6

  """

  @spec abs(number) :: number
  def abs(number) do
    :erlang.abs(number)
  end

  @doc """
