testdata for IDEA-123366

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newMethodRef/IDEA123366.java

@@ -0,0 +1,18 @@
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+class MyClass {
+  private static void test() {
+    List<String> collect = Arrays.asList("foo", "bar")
+      .stream()
+      .flatMap(MyClass::mapper)
+      .filter(s -> s.startsWith("foo"))
+      .collect(Collectors.toList());
+  }
+
+  private static Stream<String> mapper(String s) {
+    return Stream.of(s);
+  }
+}