The VaultUserOperations class represents the available user operations.
  AddOrUndeleteUserAccount | Adds the given user account to the vault (or undeletes it). | 
  AddUserAccount | Adds the given user account to the vault. Returns the created user account, with the ID property set to the real ID value. | 
  GetLoginAccountOfUser | Gets the login account that corresponds to the specified vault user. | 
  GetLoginAccountOfUserEx | Gets the login account that corresponds to the specified vault user. | 
  GetLoginAccounts | Gets the login accounts of all vault users. | 
  GetUserAccount | Retrieves a single user account. | 
  GetUserAccounts | Gets available user accounts from the vault. | 
  GetUserIDByGUID | Gets the ID of the user with the specified GUID. Returns -1 if a match is not found. | 
  GetUserList | Gets all users as key name pairs. | 
  ModifyUserAccount | Modifies the user account. | 
  RemoveUserAccount | Deletes the user account from vault. | 
  UndeleteUserAccountByGUID | Attempts to undelete a user with the specified GUID and to set its account information. Does not create new accounts. |