pub type PFN_vkDestroyDeferredOperationKHR = unsafe extern "system" fn(_device: Device, _operation: DeferredOperationKHR, _allocator: *const AllocationCallbacks);pub type PFN_vkDestroyDeferredOperationKHR = unsafe extern "system" fn(_device: Device, _operation: DeferredOperationKHR, _allocator: *const AllocationCallbacks);