Docstring on multiple lines with a module that does not import Core and Base

General Usage
7 
julia> @doc """
           add(x, y::Signed)

       This sums up `x` and the `Signed` integer
       `y` and returns the result.
       """
       math.add(x, y::Signed)
Main.math.add

julia> @eval math add(x, y::$Unsigned) = $(+)(x, y)
add (generic function with 2 methods)

julia> @doc """
           add(x, y::Unsigned)

       This sums up `x` and the `Unsigned` integer
       `y` and returns the result.
       """
       math.add(x, y::Unsigned)
Main.math.add

help?> math.add
  add(x, y::Signed)

  This sums up x and the Signed integer y and returns the result.

  ──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────

  add(x, y::Unsigned)

  This sums up x and the Unsigned integer y and returns the result.