SDL2.CS how to set the max framerate?

does anybody know how to set the framerate for SDL2-CS?
I am specifically have trouble figuring out what timer to use since there is no SDL timer class I can see.

public static class Sys
{
    public const uint FPS = 30;

    internal static int frame = 0;
    internal static bool cap = true;
    internal static ??? timer = ???;

    public Init()
    {
        SDL.SDL_Init(SDL.SDL_INIT_VIDEO);

        uint tpf = 1000 / FPS;
        bool running = true;
        while(running)
        {
            timer.start();
            
            //Do stuff

            uint frameTicks = timer.getTicks();
            if (frameTicks < ticks_per_frame)
            {
                //Wait remaining time
                SDL.SDL_Delay(tpf - frameTicks);
            }      
        }
    }