8 override fun foo() = 2 21 val y = b.foo() 21 val y = b.foo() 8 override fun foo() = 2 8 override fun foo() = 2 16 override fun foo() = 4 21 val y = b.foo() 21 val y = b.foo() 16 override fun foo() = 4 16 override fun foo() = 4