040000 tree 119b3414bb3543665c0e365fb393c76e1044f167	Instantiate-to-bound
040000 tree 45189752be72818d097d27b8c92bc6c442d2063e	Subtyping
040000 tree c8c474c350a951a103c0a2ac1e6a461e4c045cea	Super-bounded-types
040000 tree 4cfa00d4eb7e3a0e63cef0c440870d39c74350b1	Super_Mixins
040000 tree 582f0a0ec60e6e89e4f9efefad497493a47389a5	int-to-double