Function vkGetSwapchainTimeDomainPropertiesEXT 

pub unsafe extern "system" fn vkGetSwapchainTimeDomainPropertiesEXT(
    device: VkDevice,
    swapchain: VkSwapchainKHR,
    pSwapchainTimeDomainProperties: *mut VkSwapchainTimeDomainPropertiesEXT,
    pTimeDomainsCounter: *mut u64,
) -> VkResult

Available if built with prototypes.