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does anyone know why would this result to `undefine` when I'm expecting it should be either `true` or `false`? ```obj shouldBe instanceOf(SomeClass::class)```

As far as I can see, because `shouldBe` works like assertions, so it will throw an `AssertionError`.
`shouldBe` is close to `assert obj instanceOf SomeClass`

is `obj should beInstanceOf(SomeClass::class))` sufficient enough in this case?

I just want to check if obj is instance  of SomeClass

Then you can simply write `obj is SomeClass`, not sure that external libs should be used in such case

yea maybe that makes more sense. its just im using KotlinTest Shoudlspec

so I thought I should use that external libs in this case