FILE: serializer.kt
    @R|org/jetbrains/kotlin/fir/plugin/CoreSerializer|() public final object FirstSerializer : R|kotlin/Any| {
        private constructor(): R|FirstSerializer| {
            super<R|kotlin/Any|>()
        }

        public final fun serializeA(x: R|A|): R|kotlin/Unit| {
        }

        public final fun serializeB(x: R|B|): R|kotlin/Unit| {
        }

        public final fun serializeC(x: R|C|): R|kotlin/Unit| {
        }

        public final fun serializeD(x: R|D|): R|kotlin/Unit| {
        }

    }
    @R|org/jetbrains/kotlin/fir/plugin/CoreSerializer|() public final object SecondSerializer : R|kotlin/Any| {
        private constructor(): R|SecondSerializer| {
            super<R|kotlin/Any|>()
        }

        public final fun serializeA(x: R|A|): R|kotlin/Unit| {
        }

        public final fun serializeB(x: R|B|): R|kotlin/Unit| {
        }

        public final fun serializeC(x: R|C|): R|kotlin/Unit| {
        }

        public final fun serializeD(x: R|D|): R|kotlin/Unit| {
        }

    }
    @R|org/jetbrains/kotlin/fir/plugin/MySerializable|() public final class A : R|kotlin/Any| {
        public constructor(): R|A| {
            super<R|kotlin/Any|>()
        }

    }
    @R|org/jetbrains/kotlin/fir/plugin/MySerializable|() public final class B : R|kotlin/Any| {
        public constructor(): R|B| {
            super<R|kotlin/Any|>()
        }

    }
    @R|org/jetbrains/kotlin/fir/plugin/MySerializable|() public final class C : R|kotlin/Any| {
        public constructor(): R|C| {
            super<R|kotlin/Any|>()
        }

    }
    @R|org/jetbrains/kotlin/fir/plugin/MySerializable|() public final class D : R|kotlin/Any| {
        public constructor(): R|D| {
            super<R|kotlin/Any|>()
        }

    }
    public final fun testFirstSerializer(): R|kotlin/Unit| {
        Q|FirstSerializer|.R|/FirstSerializer.serializeA|(R|/A.A|())
        Q|FirstSerializer|.R|/FirstSerializer.serializeB|(R|/B.B|())
        Q|FirstSerializer|.R|/FirstSerializer.serializeC|(R|/C.C|())
        Q|FirstSerializer|.R|/FirstSerializer.serializeD|(R|/D.D|())
    }
    public final fun testSecondSerializer(): R|kotlin/Unit| {
        Q|SecondSerializer|.R|/SecondSerializer.serializeA|(R|/A.A|())
        Q|SecondSerializer|.R|/SecondSerializer.serializeB|(R|/B.B|())
        Q|SecondSerializer|.R|/SecondSerializer.serializeC|(R|/C.C|())
        Q|SecondSerializer|.R|/SecondSerializer.serializeD|(R|/D.D|())
    }
    public final fun box(): R|kotlin/String| {
        R|/testFirstSerializer|()
        R|/testSecondSerializer|()
        ^box String(OK)
    }
