inference on incomplete code (EA-90195 - AIOOBE: PsiTypesUtil.getParameterType)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/additionalConstraints/IncompleteResolveDuringNestedChecks.java

@@ -0,0 +1,18 @@
+import java.util.Optional;
+import java.util.function.UnaryOperator;
+
+class Test<T> {
+  private void example() {
+    update(x -> x.flatMap<error descr="'flatMap()' in 'Test' cannot be applied to '(<lambda expression>)'">(y -> getEmpty())</error>);
+  }
+
+  private <J> Test<J> flatMap() {
+    return null;
+  }
+
+  private <K> Optional<K> getEmpty() {
+    return Optional.empty();
+  }
+
+  void update(UnaryOperator<Test<Integer>> u) {}
+}