trait T {
    fun foo()
    fun bar()
}

class C(t :T) : T by t {
    override fun bar() {
        <selection><caret>throw UnsupportedOperationException()</selection>
    }

    override fun equals(other: Any?): Boolean {
        return super.equals(other)
    }

    override fun foo() {
        throw UnsupportedOperationException()
    }

    override fun hashCode(): Int {
        return super.hashCode()
    }

    override fun toString(): String {
        return super.toString()
    }
}

// KT-5103