pub type PFN_vkCreateIOSSurfaceMVK = unsafe extern "system" fn(Instance, *const IOSSurfaceCreateInfoMVK<'_>, *const AllocationCallbacks<'_>, *mut SurfaceKHR) -> Result;pub type PFN_vkCreateIOSSurfaceMVK = unsafe extern "system" fn(Instance, *const IOSSurfaceCreateInfoMVK<'_>, *const AllocationCallbacks<'_>, *mut SurfaceKHR) -> Result;