System.Diagnostics.Process.GetProcessById C# (CSharp) Method

        public static System.Diagnostics.Process GetProcessById(int processId) { throw null; }
        public static System.Diagnostics.Process GetProcessById(int processId, string machineName) { throw null; }

        /// <summary>
        /// Start experimental instance of Visual Studio. This will be killed on cleanup, except if a debugger is attached (in which case it can reuse the existing instance).
        /// </summary>
        private static (DTE, Process, bool) InitDTE()
        {
            bool    killVisualStudioProcessDuringTearDown;
            var     visualStudioPath = VSLocator.VisualStudioPath;
            Process process;

            // First, we try to check if an existing instance was launched
            var searcher            = new ManagementObjectSearcher($"select CommandLine,ProcessId from Win32_Process where ExecutablePath='{visualStudioPath.Replace(@"\", @"\\")}' and CommandLine like '% /RootSuffix Exp'");
            var retObjectCollection = searcher.Get();
            var result = retObjectCollection.Cast <ManagementObject>().FirstOrDefault();

            if (result != null)
            {
                var processId = (uint)result["ProcessId"];
                process = Process.GetProcessById((int)processId);
                killVisualStudioProcessDuringTearDown = false;
            }
            else
            {
                var psi = new ProcessStartInfo
                {
                    FileName         = visualStudioPath,
                    WorkingDirectory = Path.GetDirectoryName(visualStudioPath),
                    Arguments        = StartArguments,
                    UseShellExecute  = false,
                };

                // Override Xenko dir with path relative to test directory
                psi.EnvironmentVariables["XenkoDir"] = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"..\..\..\..");

                process = Process.Start(psi);
                if (process == null)
                {
                    throw new InvalidOperationException("Could not start Visual Studio instance");
                }

                // Since we are the one starting it, let's close it when we are done
                // (except if a debugger is attached, we assume developer want to iterate several time on it and will exit Visual Studio himself)
                killVisualStudioProcessDuringTearDown = !Debugger.IsAttached;
            }

            // Wait for 60 sec
            for (int i = 0; i < 60; ++i)
            {
                if (process.HasExited)
                {
                    throw new InvalidOperationException($"Visual Studio process {process.Id} exited before we could connect to it");
                }

                var matchingDte = VisualStudioDTE.GetDTEByProcess(process.Id);
                if (matchingDte != null)
                {
                    return(matchingDte, process, killVisualStudioProcessDuringTearDown);
                }

                Thread.Sleep(1000);
            }

            throw new InvalidOperationException($"Could not find the Visual Studio DTE for process {process.Id}, or it didn't start in time");
        }