Groupped tests by folders

idea/testData/intentions/loopToCallChain/flatMap/simple.kt.after

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+// INTENTION_TEXT: "Replace with 'flatMap{}.firstOrNull{}'"
+// INTENTION_TEXT_2: "Replace with 'asSequence().flatMap{}.firstOrNull{}'"
+fun foo(list: List<String>): String? {
+    <caret>return list
+            .flatMap { it.lines() }
+            .firstOrNull { it.isNotBlank() }
+}