pub type PFN_vkDestroyPrivateDataSlot = unsafe extern "system" fn(_device: Device, _private_data_slot: PrivateDataSlot, _allocator: *const AllocationCallbacks);pub type PFN_vkDestroyPrivateDataSlot = unsafe extern "system" fn(_device: Device, _private_data_slot: PrivateDataSlot, _allocator: *const AllocationCallbacks);