Help with a Macro

I currently have a macro to mark "ignore1" and set target to focus, along with a macro to sleep focus target.

I know it can be done, but I am unsure how to change that second macro to check first to see if I have a focus target set (and if so, cast sleep on that target) and if no focus target is set, to cast sleep on current target.

Any help?

tldr: How do you make a macro to:
sleep focus target
if no focus target, sleep current target.