Data dataKey = mapServiceContext.toData("key");
RecordStore recordStore = mapServiceContext.getRecordStore(partitionId,mapName);
MapMergePolicy mergePolicy = mapServiceContext.getMergePolicyProvider().getMergePolicy(PutIfAbsentMapMergePolicy.class.getName());
EntryView<String, MyObject> mergingEntryView = new SimpleEntryView("key",new MyObject());
recordStore.merge(dataKey, mergingEntryView, mergePolicy);
int deSerializedCount = myObjectExisting.deserializedCount;
assertEquals(0, deSerializedCount);
}