Preconditions

Element	Missed Instructions	Cov.	Missed Branches	Cov.	Missed	Cxty	Missed	Lines	Missed	Methods
Total	12 of 18	33%	2 of 4	50%	2	4	2	6	0	2
checkArgument(boolean, Supplier)		30%		50%	1	2	1	3	0	1
checkArgument(boolean, String)		37%		50%	1	2	1	3	0	1