inference: retrieve type from containing call if the corresponding method is not generics (IDEA-151443)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newLambda/InferenceFromReturnLambdaStatementWhereContainingMethodNonGeneric.java

@@ -0,0 +1,37 @@
+
+import java.util.Optional;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+
+class Main {
+
+  public static void main(String[] args) throws ExecutionException, InterruptedException {
+    Foo foo = first().get();
+    System.out.println(foo.getClass());
+  }
+
+  static CompletableFuture<Foo> first() {
+    return second().thenCompose(maybe -> maybe.map(bar -> CompletableFuture.completedFuture(new Foo()))
+      .orElseGet(() -> CompletableFuture.completedFuture(new FooExt())));
+  }
+
+  static CompletableFuture<Optional<Bar>> second() {
+    return CompletableFuture.completedFuture(Optional.empty());
+  }
+
+
+  static void simplified(final Optional<CompletableFuture<Foo>> future) {
+    future.orElseGet(() -> CompletableFuture.completedFuture(new FooExt()));
+  }
+
+}
+
+class Foo {
+}
+
+class FooExt extends Foo {
+
+}
+
+class Bar {
+}