Run
go mod tidy
rm -f zz_generated_mock.go
go generate ./...mockgen will print the generated code to stdout and create a empty zz_generated_mock.go file.
Or set a breakpoint in github.com/golang/mock/mockgen/model.go#L396 in function func parameterFromType(t reflect.Type) (*Parameter, error)
and debug the prog generated from mockgen (commited in this repo for testing main/gen.go)
tt.Type will be TestGenericType[github.com/daolis/mockgentest/test.TestType]