method refs: captured wildcard at receiver position

EA-77434 - assert: PsiMethodReferenceCompatibilityConstraint.getParameterizedTypeSubstitutor

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

@@ -0,0 +1,22 @@
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+import java.util.function.Function;
+import java.util.function.Supplier;
+import java.util.stream.Collectors;
+
+class Test {
+  static <T> Map<T, Integer> combine(Collection<Map<? extends T, Integer>> pMaps) {
+    Function<Map<? extends T, Integer>, Set<? extends Map.Entry<? extends T, Integer>>> entrySet = Map::entrySet;
+    return pMaps.stream()
+      .map(entrySet)
+      .flatMap(Collection::stream)
+      .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue,
+                                (pEntry1, pEntry2) -> pEntry1 + pEntry2,
+                                (Supplier<HashMap<T, Integer>>) HashMap::new
+               )
+      );
+  }
+}