StartLanguageServerViaScript()
    {
      InitialSessionState iss = InitialSessionState.Create();
      iss.LanguageMode = PSLanguageMode.ConstrainedLanguage;
      iss.ImportPSModule("Microsoft.Powershell.Utility", "Microsoft.Powershell.Core", "Microsoft.PowerShell.Security");
      iss.Commands.Add(new SessionStateCmdletEntry("Get-Command", typeof(GetCommandCommand), null));
      iss.Commands.Add(new SessionStateCmdletEntry("Where-Object", typeof(WhereObjectCommand), null));
      iss.Commands.Add(new SessionStateCmdletEntry("Select-Object", typeof(SelectObjectCommand), null));
      iss.Commands.Add(new SessionStateCmdletEntry("ForEach-Object", typeof(ForEachObjectCommand), null));
      iss.Commands.Add(new SessionStateCmdletEntry("Format-List", typeof(FormatListCommand), null));
      iss.Commands.Add(new SessionStateCmdletEntry("Format-Table", typeof(FormatTableCommand), null));
      iss.Commands.Add(new SessionStateCmdletEntry("Set-ExecutionPolicy", typeof(SetExecutionPolicyCommand), null));
      iss.Commands.Add(new SessionStateCmdletEntry("Format-Hex", typeof(FormatHex), null));
      iss.Commands.Add(new SessionStateCmdletEntry("Out-Default", typeof(OutDefaultCommand), null));
      iss.Commands.Add(new SessionStateCmdletEntry("Out-Host", typeof(OutHostCommand), null));
      iss.Commands.Add(new SessionStateCmdletEntry("Import-Module", typeof(ImportModuleCommand), null));
      iss.Commands.Add(new SessionStateCmdletEntry("Start-EditorServices", typeof(PSCommand), null));

      iss.Commands.Add(new SessionStateFunctionEntry("TabExpansion2", PowershellCommands.TabExpansion));
iss.ImportPSModule(_modulePath);
      Runspace myRunSpace = RunspaceFactory.CreateRunspace(_host, iss);
      myRunSpace.Open();
      PowerShell powershell = PowerShell.Create();
      powershell.Runspace = myRunSpace;
      powershell.AddCommand("Set-ExecutionPolicy")
                   .AddParameter("-ExecutionPolicy", "Bypass")
                   .AddParameter("-Scope", "Process")
                   .Invoke();
      PSCommand[] profileCommands = PSHostUtilities.GetProfileCommands("Microsoft.PowerShell");
      foreach (PSCommand command in profileCommands)
      {
        powershell.Commands = command;
        powershell.Invoke();
      }
      powershell.AddScript(PowershellCommands.TabExpansion);
      powershell.Runspace.SessionStateProxy.InvokeCommand.GetCommand("TabExpansion2", CommandTypes.Function);
      
      var scriptInvocation = powershell.Runspace.SessionStateProxy.InvokeCommand
                    .GetCommand(_StartEditorServicesScriptPath, CommandTypes.ExternalScript);
powershell.AddCommand(scriptInvocation)
      //"-FeatureFlags", "@()"
      .AddParameter("HostName", "monaco")
      .AddParameter("HostProfileId", "0")
      .AddParameter("HostVersion", "1.0.0")
      .AddParameter("LogPath", _logPath)
      .AddParameter("LogLevel", "Diagnostic")
      .AddParameter("BundledModulesPath", _bundledModulesPath)
      .AddParameter("SessionDetailsPath", _sessionInfoFilePath)
      .AddParameter("EnableConsoleRepl");
      
      try
      {
        foreach (var command in powershell.Commands.Commands)
       {
command.MergeMyResults(PipelineResultTypes.Error, PipelineResultTypes.Output);
          command.MergeMyResults(PipelineResultTypes.Information, PipelineResultTypes.Output);
        }
        _psInvocationResult = powershell.BeginInvoke();
}
      catch (Exception ex)
      {
Console.WriteLine(ex.Message);
      }
}