method refs: take into account super class substitutor

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/methodRef/SuperClassSubst.java

@@ -0,0 +1,18 @@
+class Double {
+  public static Double sum(Double a, Double b) {
+    return null;
+  }
+}
+
+interface BinaryOperator<T> extends BiFunction<T,T,T> {
+}
+
+interface BiFunction<T, U, R> {
+    R apply(T t, U u);
+}
+
+class U {
+  {
+    BinaryOperator<Double> doubleBinaryOperator = Double::sum;
+  }
+}