pub type PFN_vkCreateQueryPool = unsafe extern "system" fn(_device: Device, _create_info: *const QueryPoolCreateInfo, _allocator: *const AllocationCallbacks, _query_pool: *mut QueryPool) -> Result;pub type PFN_vkCreateQueryPool = unsafe extern "system" fn(_device: Device, _create_info: *const QueryPoolCreateInfo, _allocator: *const AllocationCallbacks, _query_pool: *mut QueryPool) -> Result;