How can I specify embedded option object

[SerjoPepper]

How can I document embedded fields in arguments? For example
func = (options) ->
console.log(options.part1) # {a: 1}
console.log(options.part2) # {b: 2}

I want specify that options.part1 can contain object and options.part2 too

[inossidabile]

I have no idea what you mean. Sorry.