System.Collections.Generic.List.Add(nvmlDevice)

public List<NvGpu> GetGpus() {
            List<NvGpu> results = new List<NvGpu>();
            try {
                if (NvmlInit()) {
                    _nvmlDevices.Clear();
                    uint deviceCount = 0;
                    var r = NvmlNativeMethods.nvmlDeviceGetCount(ref deviceCount);
                    CheckResult(r, () => $"{nameof(NvmlNativeMethods.nvmlDeviceGetCount)} {r.ToString()}");
                    for (int i = 0; i < deviceCount; i++) {
                        NvGpu gpu = new NvGpu {
                            GpuIndex = i
                        };
                        nvmlDevice nvmlDevice = new nvmlDevice();
                        r = NvmlNativeMethods.nvmlDeviceGetHandleByIndex((uint)i, ref nvmlDevice);
                        _nvmlDevices.Add(nvmlDevice);
                        CheckResult(r, () => $"{nameof(NvmlNativeMethods.nvmlDeviceGetHandleByIndex)}({((uint)i).ToString()}) {r.ToString()}");
                        r = NvmlNativeMethods.nvmlDeviceGetName(nvmlDevice, out string name);
                        CheckResult(r, () => $"{nameof(NvmlNativeMethods.nvmlDeviceGetName)} {r.ToString()}");
                        nvmlMemory memory = new nvmlMemory();
                        r = NvmlNativeMethods.nvmlDeviceGetMemoryInfo(nvmlDevice, ref memory);
                        CheckResult(r, () => $"{nameof(NvmlNativeMethods.nvmlDeviceGetMemoryInfo)} {r.ToString()}");
                        // short gpu name
                        if (!string.IsNullOrEmpty(name)) {
                            name = name.Replace("GeForce GTX ", string.Empty);
                            name = name.Replace("GeForce ", string.Empty);
                        }
                        nvmlPciInfo pci = new nvmlPciInfo();
                        r = NvmlNativeMethods.nvmlDeviceGetPciInfo(nvmlDevice, ref pci);
                        CheckResult(r, () => $"{nameof(NvmlNativeMethods.nvmlDeviceGetPciInfo)} {r.ToString()}");
                        gpu.Name = name;
                        gpu.BusId = (int)pci.bus;
                        gpu.TotalMemory = memory.total;
                        results.Add(gpu);
                    }
                }
            }
            catch {
            }

            return results;
        }