1 function call() { [native code] }

     2 func.call.length = 1

     3 hello, 

     4 world

     5 hello, 

     6 world

     7 hello, 

     8 world

     9 invokedynamic

    10  is great!

    11 func.apply.length = 2

    12 I am func2

    13 undefined

    14 undefined