Delegated implementations for properties and extension properties.

compiler/testData/ir/irText/classes/delegatedImplementation.kt

@@ -10,9 +10,22 @@ object BaseImpl : IBase {
     override fun String.qux() {}
 }
 
-interface IOther
-fun otherImpl(): IOther = object : IOther {}
+interface IOther {
+    val x: String
+    var y: Int
+    val Byte.z1: Int
+    var Byte.z2: Int
+}
+
+fun otherImpl(x0: String, y0: Int): IOther = object : IOther {
+    override val x: String = x0
+    override var y: Int = y0
+    override val Byte.z1: Int get() = 1
+    override var Byte.z2: Int
+        get() = 2
+        set(value) {}
+}
 
 class Test1 : IBase by BaseImpl
 
-class Test2 : IBase by BaseImpl, IOther by otherImpl()
+class Test2 : IBase by BaseImpl, IOther by otherImpl("", 42)