Add test for decompiled text

idea/testData/libraries/decompiledText/ClassWithClassObject/ClassWithClassObject.kt

@@ -0,0 +1,34 @@
+package test
+
+class ClassWithClassObject {
+    fun f() {
+    }
+
+    class object {
+        fun f() {
+        }
+
+        fun Int.f() {
+        }
+
+        private fun privateFun() {
+        }
+
+        val a: A = A()
+
+        public var b: B = B()
+
+        val Int.g: Int
+            get() = this + 2
+
+        fun <T, K, G> complexFun(a: T, b: K, c: G): G {
+            throw AssertionError()
+        }
+    }
+}
+
+class B {
+}
+
+class A {
+}