如何在olingo中读取具有复杂属性的实体集合？

public class MyEntitySetProcessor implements EntitySetProcessor {
    @Override
    public void readEntitySet(ODataRequest request, ODataResponse response, UriInfo uriInfo, ContentType responseFormat) throws ODataApplicationException, SerializerException {
        // 读取实体集合
        EntitySet entitySet = readEntitySetFromDataSource();

        // 设置复杂属性
        Entity entity = entitySet.getEntities().get(0);
        ComplexValue complexValue = new ComplexValue();
        complexValue.getValue().add(new Property(null, "property1", ValueType.PRIMITIVE, "value1"));
        complexValue.getValue().add(new Property(null, "property2", ValueType.PRIMITIVE, "value2"));
        entity.getProperties().add(new Property(null, "complexProperty", ValueType.COMPLEX, complexValue));

        // 返回实体集合
        ODataSerializer serializer = OData.newInstance().createSerializer(responseFormat);
        SerializerResult serializerResult = serializer.entitySet(null, entitySet);
        response.setContent(serializerResult.getContent());
        response.setStatusCode(HttpStatusCode.OK.getStatusCode());
        response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());
    }
}