Java: Don't introduce parameter for potentially matching fields if the fields are written - improved (IDEA-182284)

java/java-tests/testData/refactoring/extractMethod/DecrementDifferentInnerFieldsDuplicate.java

@@ -0,0 +1,21 @@
+class DecrementDifferentInnerFieldsDuplicate {
+    class C {
+        int x;
+        int y;
+    }
+
+    private void foo(C a, C b) {
+        <selection>
+        if (a.x > 0) {
+            bar(a.x);
+            a.x--;
+        }</selection>
+
+        if (b.y > 0) {
+            bar(b.y);
+            b.y--;
+        }
+    }
+
+    private void bar(int i) { }
+}