}

    @Test
    fun `if a lambda is optional, a missing lambda is ok`() {
        schema.resolve("lambdaOptional(0)").isSuccessful()
    }

    @Test
    fun `if a lambda is optional, a lambda is accepted`() {
        schema.resolve("lambdaOptional(0) { }").isSuccessful()
    }

    @Test
    fun `if a lambda is not allowed, missing lambda is ok`() {