method refs: ensure inference from captured return type (IDEA-145152)

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

@@ -0,0 +1,12 @@
+import java.util.stream.Stream;
+class Test {
+
+  void foo(final Stream<StubElement<?>> inStream){
+    inStream.map(StubElement::getPsi)
+      .map(s -> s.length());
+  }
+
+  class StubElement<T extends String> {
+    T getPsi() {return null;}
+  }
+}

java/java-tests/testSrc/com/intellij/codeInsight/daemon/lambda/NewMethodRefHighlightingTest.java

@@ -426,6 +426,10 @@ public class NewMethodRefHighlightingTest extends LightDaemonAnalyzerTestCase {
     doTest();
   }
 
+  public void testCapturedReturnTypeOfMethodReference() throws Exception {
+    doTest();
+  }
+
   private void doTest() {
     doTest(false);
   }