greenfoot.util.GreenfootUtil

is imported to:

.   greenfoot
.   greenfoot.collision
.   greenfoot.core
.   greenfoot.export
.   greenfoot.gui
.   greenfoot.guifx
.   greenfoot.guifx.classes
.   greenfoot.guifx.images
.   greenfoot.mouse
.   greenfoot.platforms.ide
.   greenfoot.sound