class_ property
Class is what the sandbox is FOR: "exec" for a code-interpreter call, "dev" for a workspace bound to a project, "desktop" for one with a screen. It decides the image, the working directory and the isolation.
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
String? class_;