/**
   * Returns a list of all the known users contained within FreeAgent for the authorised account.
   *
   * @return A list of User instances.
   */
  public List<FreeAgentUser> getUsers() {
    FreeAgentUserWrapper usersWrapper = freeAgentServiceInstance.getUsers();

    if (usersWrapper != null) {
      return usersWrapper.getUsers();
    }
    return null;
  }