method refs: missed qualifier substitution for return type (IDEA-140539)

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

@@ -0,0 +1,10 @@
+import java.util.function.Function;
+
+class Test {
+
+  private void foo(final Function<String, String> steps) {
+    map(steps::compose);
+  }
+
+  <U> void map(Function<Function<String, String>,  U> mapper) {}
+}