TypeChecker.new ItemMappingFunction() {...}

Element	Missed Instructions	Cov.	Missed Branches	Cov.	Missed	Cxty	Missed	Lines	Missed	Methods
Total	14 of 14	0%	2 of 2	0%	3	3	4	4	2	2
mapItem(Item)		0%		0%	2	2	3	3	1	1
{...}		0%		n/a	1	1	1	1	1	1