Type Alias PFN_vkCreateMacOSSurfaceMVK 

pub type PFN_vkCreateMacOSSurfaceMVK = unsafe extern "system" fn(instance: Instance, p_create_info: *const MacOSSurfaceCreateInfoMVK<'_>, p_allocator: *const AllocationCallbacks<'_>, p_surface: *mut SurfaceKHR) -> Result;