ExpressionUtils#getQualifierOrThis -> getEffectiveQualifier, nullable now (cannot construct this expression for outer anonymous class)

Fixes EA-140652 - assert: JavaParserUtil.parseFragment

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamToLoop/afterForEach.java

@@ -1,7 +1,6 @@
-// "Replace Stream API chain with loop" "true"
+// "Fix all 'Stream API call chain can be replaced with loop' problems in file" "true"
 
-import java.util.Arrays;
-import java.util.List;
+import java.util.*;
 
 public class Main {
   private static void test(List<String> list) {
@@ -15,4 +14,29 @@ public class Main {
   public static void main(String[] args) {
     test(Arrays.asList("a", "b", "xyz"));
   }
+
+  void testLocal() {
+    class X extends ArrayList<String> {
+      class Y {
+        void test() {
+            for (String s : X.this) {
+                System.out.println(s);
+            }
+        }
+      }
+    }
+  }
+
+  void testAnonymous() {
+    new ArrayList<String>() {
+      class Y {
+        void test() {
+            for (Iterator<String> it = stream().iterator(); it.hasNext(); ) {
+                String s = it.next();
+                System.out.println(s);
+            }
+        }
+      }
+    };
+  }
 }