"Jump to definition" for methods without external parameter names

For method calls with external parameter names, e.g.

let a = Array(count: 3, repeatedValue: 0)

I can command-click on any parameter name to jump to the method definition, in this case

init(count: Int, repeatedValue: Element)

However, if all parameter names are empty such as in

let c = Array("abc".characters)

I haven't found a way to do the same.

Of course I can lookup that the characters method returns a String.CharacterView which in turn conforms to SequenceType, so this will probably be

init<S : SequenceType where S.Generator.Element == _Buffer.Element>(_ s: S)

but I wonder if there is a simpler way. In particular, if a type has many overloaded init methods (without external parameter names) it can become difficult to determine which one is acutally used.