instance: documentation is wrong

[infoman]

From http://trailblazer.to/gems/representable/3.0/function-api.html#instance:

property :artist,
  instance: ->(fragment) do
    fragment["type"] == "rockstar" ? Rockstar.new : Artist.new
  end

This way, we are not getting what is supposed to be fragment, but instead there's a giant hash including full document, fragment and other parameters. Correct way seems to be either:

property :artist,
  instance: ->(fragment: **) do
    fragment["type"] == "rockstar" ? Rockstar.new : Artist.new
  end

(add represented: and other options if needed), or just use the original hash as options and do something like:

property :artist,
  instance: ->(options) do
    options[:fragment]["type"] == "rockstar" ? Rockstar.new : Artist.new
  end

Ia also looks like class: option description at the same page in it's lambda form may be affected by this too, but I didn't try.