J2K: Fix type parameters in LHS of callable reference

nj2k/testData/newJ2k/function/genericMemberFunctionRef.java

@@ -0,0 +1,21 @@
+// RUNTIME_WITH_FULL_JDK
+
+import java.util.List;
+
+public class TestLambda<T> {
+    public static class Box<Q> {
+
+        private Q value;
+        public Q unbox() {
+            return value;
+        }
+
+        public Box(Q q) {
+            value = q;
+        }
+    }
+
+    public String toStringAllBox(List<Box<T>> list) {
+        return list.stream().map(Box<T>::unbox).map(T::toString).reduce((s1,s2) -> s1 + ", " + s2 ).orElse("");
+    }
+}

nj2k/testData/newJ2k/function/genericMemberFunctionRef.kt

@@ -0,0 +1,12 @@
+class TestLambda<T> {
+    class Box<Q>(private val value: Q) {
+        fun unbox(): Q {
+            return value
+        }
+    }
+
+    fun toStringAllBox(list: List<Box<T>>): String {
+        return list.stream().map { obj: Box<T> -> obj.unbox() }.map { obj: T -> obj.toString() }
+            .reduce { s1: String, s2: String -> "$s1, $s2" }.orElse("")
+    }
+}