RubyCallStack.new FrameInstanceVisitor() {...}

Element	Missed Instructions	Cov.	Missed Branches	Cov.	Missed	Cxty	Missed	Lines	Missed	Methods
Total	30 of 30	0%	4 of 4	0%	4	4	8	8	2	2
visitFrame(FrameInstance)		0%		0%	3	3	7	7	1	1
{...}		0%		n/a	1	1	1	1	1	1