switch tests on new inference

(cherry picked from commit d2cbf3f2833104c3a0381059b0d6ef8ac0b3c94c)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newMethodRef/AfterCollectors1.java

@@ -0,0 +1,26 @@
+import java.util.List;
+import java.util.Map;
+
+class Collector<C> {
+}
+
+interface Function<T, R> {
+   R apply(T t);
+}
+
+public final class Collectors {
+    public static <T>
+    Collector<List<T>> toList() {
+        return null;
+    }
+
+
+    public static <T1, K1> Collector<Map<K1, List<T1>>> groupingBy(Function<T1, K1> classifier) {
+        return groupingBy(classifier, toList());
+    }
+
+    public static <T, K, D> Collector<Map<K, D>> groupingBy(Function<T, K> classifier,
+                                                            Collector<D> downstream) {
+        return null;
+    }
+}