Re: advanced `nim doc` use

[JohnAD]

Are there any when conditions I could use just for documentation. Aka:
    
    
    when defined(docgen):
      type
        ABC = object
          ## this the fancy ABC object. Use it to track blah and stuff.
          blah: int
    else:
      import common  # this imports the REAL type ABC for shared use
    
    import seesaw  # brings in "seeSawAction"; that module also imports common
    
    var x = ABC(blah: 4)
    let bing = x.seesawAction()
    
    
    Run