Function CFRunLoopTimerCreateWithHandler 

pub unsafe extern "C-unwind" fn CFRunLoopTimerCreateWithHandler(
    allocator: Option<&CFAllocator>,
    fire_date: CFAbsoluteTime,
    interval: CFTimeInterval,
    flags: CFOptionFlags,
    order: CFIndex,
    block: Option<&DynBlock<dyn Fn(*mut CFRunLoopTimer)>>,
) -> Option<CFRetained<CFRunLoopTimer>>

👎Deprecated: renamed to CFRunLoopTimer::with_handler

Available on crate features CFDate and CFRunLoop and block2 only.