StreamToLoop: add finisher parentheses automatically if necessary

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

@@ -14,7 +14,7 @@ public class Main {
               count++;
           }
       }
-      return (count == 0 ? OptionalDouble.empty() : OptionalDouble.of(sum / count));
+      return count == 0 ? OptionalDouble.empty() : OptionalDouble.of(sum / count);
   }
 
   public static void main(String[] args) {

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

@@ -13,7 +13,7 @@ public class Main {
               count++;
           }
       }
-      return (count == 0 ? OptionalDouble.empty() : OptionalDouble.of((double) sum / count));
+      return count == 0 ? OptionalDouble.empty() : OptionalDouble.of((double) sum / count);
   }
 
   public static void main(String[] args) {

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

@@ -13,7 +13,7 @@ public class Main {
               count++;
           }
       }
-      return (count == 0 ? OptionalDouble.empty() : OptionalDouble.of((double) sum / count));
+      return count == 0 ? OptionalDouble.empty() : OptionalDouble.of((double) sum / count);
   }
 
   public static void main(String[] args) {

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

@@ -14,7 +14,7 @@ public class Main {
               count++;
           }
       }
-      System.out.println((count == 0 ? 0.0 : sum / count));
+      System.out.println(count == 0 ? 0.0 : sum / count);
   }
 
   public static void main(String[] args) {

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

@@ -14,7 +14,7 @@ public class Main {
               count++;
           }
       }
-      System.out.println((count == 0 ? 0.0 : (double) sum / count));
+      System.out.println(count == 0 ? 0.0 : (double) sum / count);
   }
 
   public static void main(String[] args) {

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

@@ -16,7 +16,7 @@ public class Main {
               }
           }
       }
-      return (seen ? Optional.of(best) : Optional.empty());
+      return seen ? Optional.of(best) : Optional.empty();
   }
 
   public static void main(String[] args) {

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamToLoop/afterCollectReduce1.java

@@ -18,7 +18,7 @@ public class Main {
               acc = acc + s;
           }
       }
-      return (seen ? Optional.of(acc) : Optional.empty());
+      return seen ? Optional.of(acc) : Optional.empty();
   }
 
   public static void main(String[] args) {

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

@@ -16,7 +16,7 @@ public class Main {
                 count++;
             }
         }
-        return (count == 0 ? 0.0 : (double) sum / count);
+        return count == 0 ? 0.0 : (double) sum / count;
     };
     System.out.println(s.getAsDouble());
   }

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

@@ -1,11 +1,9 @@
 // "Replace Stream API chain with loop" "true"
 
-import java.util.Arrays;
-import java.util.List;
-import java.util.OptionalDouble;
+import java.util.*;
 
 public class Main {
-  public static double test(List<String> strings) {
+  public static OptionalDouble test(List<String> strings) {
       boolean seen = false;
       double best = 0;
       for (String string : strings) {
@@ -15,7 +13,7 @@ public class Main {
               best = length;
           }
       }
-      return (seen ? OptionalDouble.of(best) : OptionalDouble.empty()).orElse(-1);
+      return seen ? OptionalDouble.of(best) : OptionalDouble.empty();
   }
 
   public static void main(String[] args) {

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

@@ -15,7 +15,7 @@ public class Main {
               acc = acc * i;
           }
       }
-      return (seen ? OptionalInt.of(acc) : OptionalInt.empty());
+      return seen ? OptionalInt.of(acc) : OptionalInt.empty();
   }
 
   public static void main(String[] args) {

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

@@ -15,7 +15,7 @@ public class Main {
               acc = acc * number;
           }
       }
-      return (seen ? Optional.of(acc) : Optional.empty());
+      return seen ? Optional.of(acc) : Optional.empty();
   }
 
   public static void main(String[] args) {

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

@@ -1,11 +1,10 @@
 // "Replace Stream API chain with loop" "true"
 
-import java.util.Arrays;
-import java.util.List;
+import java.util.*;
 
 public class Main {
-  public static double test(List<String> strings) {
-    return strings.stream().mapToDouble(String::length).m<caret>ax().orElse(-1);
+  public static OptionalDouble test(List<String> strings) {
+    return strings.stream().mapToDouble(String::length).m<caret>ax();
   }
 
   public static void main(String[] args) {