--- old/src/java.base/share/classes/java/lang/invoke/MethodHandleImpl.java	2017-08-28 15:42:32.000000000 -0700
+++ new/src/java.base/share/classes/java/lang/invoke/MethodHandleImpl.java	2017-08-28 15:42:31.000000000 -0700
@@ -1737,6 +1737,12 @@
             }
 
             @Override
+            public MethodType getMethodType(Object mname) {
+                MemberName memberName = (MemberName)mname;
+                return memberName.getMethodType();
+            }
+
+            @Override
             public boolean isNative(Object mname) {
                 MemberName memberName = (MemberName)mname;
                 return memberName.isNative();