inference: incorporation with capture and fresh variables (IDEA-145566)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/graphInference/ReturnConstraintsWithCaptureIncorporationOfFreshVariables.java

@@ -0,0 +1,16 @@
+import java.util.List;
+import java.util.function.Function;
+
+class Test {
+  void foo(Function<String, List<String>> f) {
+    DS<List<String>> ds = flatMap(f);
+  }
+
+
+  public <R> Operator<R, ?> flatMap(Function<String, R> flatMapper) {
+    return null;
+  }
+}
+
+class Operator<OUT, O extends Operator<OUT, O>> extends DS<OUT> {}
+class DS<OUT> {}