Google Data client libraries are available to help you write client applications that use the Sites Data API. For each language, the client library provides tools and an abstraction layer, letting you construct queries and use response data without having to create HTTP requests or process HTTP responses by hand. Each client library provides classes that correspond to the elements and data types that the API uses. The libraries also provide extensions for specific Google services that have Data APIs. Client libraries are not tied to a specific version of the API. Client libraries include access to all the versions of the API and let you specify a version to develop against. The API versions supported by each client library are listed in the table below.
