@SuppressWarnings("unchecked")
public Map<String, Object> getInnerData(Map<String, Object> context) {
if (context instanceof Map<?, ?>
&& ((Map<String, Object>) context).containsKey("$$archive")
&& ((Map<String, Object>) context).containsKey("$$id")) {
Map<String, Object> datumAsMap = (Map<String, Object>) context;
Archive arch = jsonContext.getArchive((String) datumAsMap.get("$$archive"));
if (arch == null) return null;
Object target = arch.getObject((Integer) datumAsMap.get("$$id"));
if (target instanceof Map<?, ?>) return (Map<String, Object>) target;
}
return null;
}
