jQuery UI menu position parameter

[trashhead]

I tried to fork and grunt but it got way more complicated than I thought it would.
Anyway I am missing the possibility to pass the position parameter for the menu widget.
Not the contextmenu position parameter but the menu widgets position parameter, it tells the menu widget where to position submenus.

Was thinking a parameter called subPosition, defaults to menu's default position:
{ my: "left top", at: "right top" }
This is quite important to have cause of the collision parameter:
{ my: "left top", at: "right top", collision: "fit"}

Or maybe just default to { my: "left top", at: "right top", collision: "fit"}.

Thanks