ExternalCatalog.ConstraintMetadataMutationGuard

Element	Missed Instructions	Cov.	Missed Branches	Cov.	Missed	Cxty	Missed	Lines	Missed	Methods
Total	2 of 35	94%	2 of 4	50%	2	4	0	8	0	2
close()		93%		50%	2	3	0	6	0	1
ExternalCatalog.ConstraintMetadataMutationGuard(ExternalCatalog)		100%		n/a	0	1	0	2	0	1