Function SRAbsoluteTimeFromContinuousTime 

pub unsafe extern "C-unwind" fn SRAbsoluteTimeFromContinuousTime(
    cont: u64,
) -> SRAbsoluteTime

Available on crate feature objc2-core-foundation only.

Convert a mach_continuous_time to an SRAbsoluteTime.

Because mach_continuous_time is volatile and hardware specific, the mach_continuous_time must originate from the same device and boot session that SRAbsoluteTimeFromContinuousTime() is called from. The return value for mach_continuous_times spanning boot sessions or devices is undefined.