+--- Metrics of covariance detection ---
+-- Generic classes --
+ list:
+ non generic: 7 (100.00%)
+ total classes: 7
+ total formal parameters: 0
+-- Including `private` properties --
+ covariants: 0 (na%)
+ contravariants: 0 (na%)
+ bivariants: 0 (na%)
+ invariants: 0 (na%)
+ total: 0
+-- Excluding `private` properties --
+ covariants: 0 (na%)
+ contravariants: 0 (na%)
+ bivariants: 0 (na%)
+ invariants: 0 (na%)
+ total: 0