// FIR_IDENTICAL interface Foo class Bar(f: Foo) : Foo by f { // Backing field is renamed to `$$delegate_0$1` in JVM_IR val `$$delegate_0`: Foo? = null } class Bar2(f: Foo) : // Backing field for delegate is renamed to `$$delegate_0$1` in JVM_IR Foo by f { lateinit var `$$delegate_0`: Foo }