LambdaRefactoringUtil#convertToLambda: check context when deciding whether to add qualifier

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

@@ -14,7 +14,7 @@ public class Main {
       long limit = 33;
       OUTER:
       while (true) {
-          Integer x = Main.getInt();
+          Integer x = getInt();
           for (int i = 0; i < x; i++) {
               if (limit-- == 0) break OUTER;
               stat.accept(i);

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

@@ -0,0 +1,22 @@
+// "Replace Stream API chain with loop" "true"
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class Test {
+  static String doProcess(String s) {
+    return s;
+  }
+
+  public static void main(String[] args) {
+      List<String> list = new ArrayList<>();
+      for (String s : Arrays.asList("a", "b", "c")) {
+          String doProcess = doProcess(s);
+          list.add(doProcess);
+      }
+      System.out.println(list);
+  }
+}

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

@@ -0,0 +1,16 @@
+// "Replace Stream API chain with loop" "true"
+
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class Test {
+  static String doProcess(String s) {
+    return s;
+  }
+
+  public static void main(String[] args) {
+    List<String> list = Stream.of("a", "b", "c").map(Test::doProcess).col<caret>lect(Collectors.toList());
+    System.out.println(list);
+  }
+}