Improve specs and guards in Code module (#5332)
Improve specs and guards in Code module (#5332)


kimshrier/elixir,beedub/elixir,elixir-lang/elixir,beedub/elixir,kimshrier/elixir,kelvinst/elixir,ggcampinho/elixir,pedrosnk/elixir,gfvcastro/elixir,lexmag/elixir,michalmuskala/elixir,joshprice/elixir,gfvcastro/elixir,ggcampinho/elixir,lexmag/elixir,kelvinst/elixir,antipax/elixir,pedrosnk/elixir,antipax/elixir