do not need parenthesis for associative operations (IDEADEV-41569); move to java-tests

java/java-tests/testData/refactoring/introduceVariable/genericWithTwoParameters2/after/Pair.java

@@ -0,0 +1,10 @@
+class Pair<L,R> {
+    public Pair(L l, R r) {
+    }
+    public L getL() {
+        return null;
+    }
+    public R getR() {
+        return null;
+    }
+}