contract RBACWithAdmin is RBAC {
  /**
   * A constant role name for indicating admins.
   */
  string public constant ROLE_ADMIN = "admin";
  string public constant ROLE_PAUSE_ADMIN = "pauseAdmin";

  /**
   * @dev modifier to scope access to admins
   * // reverts
   */
  modifier onlyAdmin()
  {
    checkRole(msg.sender, ROLE_ADMIN);
    _;
  }
  modifier onlyPauseAdmin()
  {
    checkRole(msg.sender, ROLE_PAUSE_ADMIN);
    _;
  }
  /**
   * @dev constructor. Sets msg.sender as admin by default
   */
  constructor()
    public
  {
    addRole(msg.sender, ROLE_ADMIN);
    addRole(msg.sender, ROLE_PAUSE_ADMIN);
  }

  /**
   * @dev add a role to an address
   * @param addr address
   * @param roleName the name of the role
   */
  function adminAddRole(address addr, string roleName)
    onlyAdmin
    public
  {
    addRole(addr, roleName);
  }

  /**
   * @dev remove a role from an address
   * @param addr address
   * @param roleName the name of the role
   */
  function adminRemoveRole(address addr, string roleName)
    onlyAdmin
    public
  {
    removeRole(addr, roleName);
  }
}
function adminAddRole(address addr, string roleName)
  onlyAdmin
  public
{
  addRole(addr, roleName);
}

/**
 * @dev add a role to an address
 * @param addr address
 * @param roleName the name of the role
 */