In this screen you can download your individually generated SDK for the language you choose from the main menu.
By selecting the class in the left navigation bar the examples change according to the class. Since every system has its own SDK, changing the system on the upper left will let you download the SDK for the selected system (Live/Staging/Test).
Hit the download buttons above the example to to get your SDK. Find our REST API when clicking the button bellow.
Use the ribbons in the main menu to switch the languages in which you want to export your generated SDK. Or try out the REST API with cURL.