Grouped test data for smart completion by folders

idea/testData/completion/smart/this/QualifiedThisOfExtensionFunction.kt

@@ -0,0 +1,9 @@
+class Foo{
+    fun String.foo(){
+        fun Foo.bar(){
+            val s: String = <caret>
+        }
+    }
+}
+
+// EXIST: { lookupString:"this@foo", typeText:"String" }