IDEA-167580 Uncompilable code after conversion Stream -> Loop with generics

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

@@ -1,8 +1,12 @@
 // "Fix all 'Stream API call chain can be replaced with loop' problems in file" "true"
 
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 import java.util.function.Predicate;
 
+import static java.util.stream.Collectors.*;
+
 public class Main {
   static Predicate<String> nonEmpty = s -> s != null && !s.isEmpty();
 
@@ -16,6 +20,24 @@ public class Main {
       return count;
   }
 
+  private Set<Identifier> test(Set<Identifier> identifiers) {
+      Set<Identifier> set = new HashSet<>();
+      Predicate<? super Identifier> predicate = isReady(identifiers);
+      for (Identifier identifier : identifiers) {
+          if (predicate.test(identifier)) {
+              set.add(identifier);
+          }
+      }
+      return set;
+  }
+
+  private Predicate<? super Identifier> isReady(Set<Identifier> identifiers) {
+    return null;
+  }
+
+  private static class Identifier {
+  }
+
   private static long testStreamOfFunctions(List<Predicate<String>> predicates, List<String> strings) {
       long count = 0L;
       for (Predicate<String> pred : predicates) {

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

@@ -1,8 +1,11 @@
 // "Fix all 'Stream API call chain can be replaced with loop' problems in file" "true"
 
 import java.util.List;
+import java.util.Set;
 import java.util.function.Predicate;
 
+import static java.util.stream.Collectors.*;
+
 public class Main {
   static Predicate<String> nonEmpty = s -> s != null && !s.isEmpty();
 
@@ -10,6 +13,17 @@ public class Main {
     return strings.stream().filter(nonEmpty).cou<caret>nt();
   }
 
+  private Set<Identifier> test(Set<Identifier> identifiers) {
+    return identifiers.stream().filter(isReady(identifiers)).collect(toSet());
+  }
+
+  private Predicate<? super Identifier> isReady(Set<Identifier> identifiers) {
+    return null;
+  }
+
+  private static class Identifier {
+  }
+
   private static long testStreamOfFunctions(List<Predicate<String>> predicates, List<String> strings) {
     return predicates.stream().filter(pred -> pred != null)
              .flatMap(p -> strings.stream().filter(p)).count();