public static extern void ContextGroupRelease([NativeTypeName("JSContextGroupRef")] JsContextGroup *group);
public static extern JsContext *GlobalContextCreateInGroup([NativeTypeName("JSContextGroupRef")] JsContextGroup *group, [NativeTypeName("JSClassRef")] JsClass *globalObjectClass);
public static extern JsContextGroup *ContextGroupRetain([NativeTypeName("JSContextGroupRef")] JsContextGroup *group);