fix tests for chronicle map on engine.

src/main/java/net/openhft/chronicle/map/MapStatelessClient.java

@@ -3,13 +3,16 @@ package net.openhft.chronicle.map;
 import net.openhft.chronicle.engine.client.ClientWiredStatelessTcpConnectionHub;
 import net.openhft.chronicle.wire.CoreFields;
 import net.openhft.chronicle.wire.ParameterizeWireKey;
+import net.openhft.chronicle.wire.ValueIn;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.util.function.Function;
+
 /**
  * Created by Rob Austin
  */
-public abstract class MapStatelessClient< E extends ParameterizeWireKey> extends AbstactStatelessClient<E> {
+public abstract class MapStatelessClient<E extends ParameterizeWireKey> extends AbstactStatelessClient<E> {
 
     /**
      * @param channelName
@@ -28,14 +31,19 @@ public abstract class MapStatelessClient< E extends ParameterizeWireKey> extends
     @Nullable
     protected <R> R proxyReturnTypedObject(
             @NotNull final E eventId,
+            R usingValue,
             @NotNull final Class<R> resultType,
             @Nullable Object... args) {
 
+        Function<ValueIn, R> consumerIn = resultType == CharSequence.class && usingValue != null
+                ? f -> {
+            f.text((StringBuilder) usingValue);
+            return usingValue;
+        }
+                : f -> f.object(resultType);
         return proxyReturnWireConsumerInOut(eventId,
-                CoreFields.reply, toParameters(eventId, args),
-                f -> f.object(resultType));
-
+                CoreFields.reply,
+                toParameters(eventId, args),
+                consumerIn);
     }
-
-
 }