How do you duplicate a MovieClip in AS3?

duplicateMovieClip() is gone. What replaced it?

The Help Docs provide this tremendously useful information under AS2 migration:
duplicateMovieClip() flash.display.MovieClip.MovieClip() Replaced by new MovieClip class constructor function.

EDIT:
Found the answer here: http://www.kirupa.com/forum/showthread.php?p=1939827