Function vkCreateSwapchainKHR 

pub unsafe extern "system" fn vkCreateSwapchainKHR(
    device: VkDevice,
    pCreateInfo: *const VkSwapchainCreateInfoKHR,
    pAllocator: *const VkAllocationCallbacks,
    pSwapchain: *mut VkSwapchainKHR,
) -> VkResult

Available if built with prototypes.