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QA is happening as part of code review.

Indicator definitions: https://docs.google.com/a/dimagi.com/spreadsheets/d/1Ug09IcbogB9JyCIGS2vHV0kRTn2U_zO-Y9HRAinOpT0/edit#gid=1495052602

@emord @czue @esoergel 
this comment could also be improved, since this is only one small way this could fail. either you should add a check for a null domain value or you should update the comment indicating that you don't care about exceptions here (and why).