@Override
public ObjectStoreDataset<?> getDataset(DatasetSpecification spec,
Map<String, String> arguments, ClassLoader classLoader) throws IOException {
DatasetSpecification kvTableSpec = spec.getSpecification("objects");
KeyValueTable table = tableDef.getDataset(kvTableSpec, arguments, classLoader);
TypeRepresentation typeRep = GSON.fromJson(spec.getProperty("type"), TypeRepresentation.class);
Schema schema = GSON.fromJson(spec.getProperty("schema"), Schema.class);
return new ObjectStoreDataset(spec.getName(), table, typeRep, schema, classLoader);
}