redundant type arguments: check all methods applicability till top level (IDEA-166696)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantTypeArgs/beforeNestedCallWithMethodRef.java

@@ -0,0 +1,12 @@
+// "Remove explicit type arguments" "false"
+
+import java.util.*;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+class Test {
+  void foo(List<String> input, Function<String, Integer> length) {
+    input.stream().collect(Collectors.groupingBy(length,
+                                                 Collectors.collectingAndThen(Collectors.<St<caret>ring>maxBy(Comparator.naturalOrder()), Optional::get)));
+  }
+}