Add option to update collaboration expiration (#95)

Author: Matt Willer

BoxCLI/Commands/CollaborationSubCommands/CollaborationUpdateCommand.cs

@@ -29,6 +29,7 @@ public class CollaborationUpdateCommand : CollaborationSubCommandBase
         private CommandOption _coowner;
         private CommandOption _owner;
         private CommandOption _canViewPath;
+        private CommandOption _expiresAt;
         private CommandOption _fieldsOption;
         private CommandLineApplication _app;
         private IBoxHome _home;
@@ -61,6 +62,7 @@ public override void Configure(CommandLineApplication command)
             _role = command.Option("-r|--role", "An option to manually enter the role", CommandOptionType.SingleValue);
             _status = command.Option("--status", "Update the collaboration status", CommandOptionType.SingleValue);
             _canViewPath = command.Option("--can-view-path", "Whether view path collaboration feature is enabled or not.", CommandOptionType.NoValue);
+            _expiresAt = command.Option("--expires-at", "When the collaboration should expire.", CommandOptionType.SingleValue);
             command.OnExecute(async () =>
             {
                 return await this.Execute();
@@ -114,6 +116,10 @@ await base.ProcessAddCollaborationsFromFile(_bulkPath.Value(), base._t, commandN
             {
                 collabRequest.Status = _status.Value();
             }
+            if (this._expiresAt.HasValue())
+            {
+                collabRequest.ExpiresAt = GeneralUtilities.GetDateTimeFromString(this._expiresAt.Value());
+            }
             collabRequest.Role = role;
 
             var result = await boxClient.CollaborationsManager.EditCollaborationAsync(collabRequest, fields: fields);