This method allows you to create a Group within a List.
- string CreateGroup(string accessKey, int listID, string groupName, stringgroupNotes)
- accessKey: access key obtained using the LoginFromID method
- listID: ID of the list that the new Group will belong to
- groupName: name of the new Group
- groupNotes: administrative notes for this new Group
If a group with the same name already exists in the list, then no new group is created and the ID of existing group is returned.