use sendInternal rather than calling hook directly

compiler/src/main/cpp/capnpc-java.c++

@@ -2031,7 +2031,7 @@ private:
           sp, "        return ", paramFactory, ";\n",
           sp, "      }\n",
           sp, "      default Response send() {\n",
-          sp, "        return new Response(this.getHook().send());\n",
+          sp, "        return new Response(this.sendInternal());\n",
           sp, "      }\n",
           sp, "    }\n",
           sp, "    public static final class Response\n",

runtime/src/main/java/org/capnproto/AnyPointer.java

@@ -221,6 +221,11 @@ public final class AnyPointer {
             return AnyPointer.factory;
         }
 
+        @Override
+        public RemotePromise<Reader> sendInternal() {
+            return this.send();
+        }
+
         public RemotePromise<Reader> send() {
             return this.getHook().send();
         }

runtime/src/main/java/org/capnproto/Request.java

@@ -16,6 +16,10 @@ public interface Request<Params> {
 
     Request<AnyPointer.Builder> getTypelessRequest();
 
+    default RemotePromise<AnyPointer.Reader> sendInternal() {
+        return this.getTypelessRequest().sendInternal();
+    }
+
     static <Params> Request<Params> newBrokenRequest(FromPointerBuilder<Params> paramsFactory,
                                                      Throwable exc) {