interface AccessManagerInterface

interface AccessManagerInterface {

  /**
   * Checks a named route with parameters against applicable access check services.
   *
   * Determines whether the route is accessible or not.
   *
   * @param string $route_name
   *   The route to check access to.
   * @param array $parameters
   *   Optional array of values to substitute into the route path pattern.
   * @param \Drupal\Core\Session\AccountInterface $account
   *   (optional) Run access checks for this account. Defaults to the current
   *   user.
   * @param bool $return_as_object
   *   (optional) Defaults to FALSE.
   *
   * @return bool|\Drupal\Core\Access\AccessResultInterface
   *   The access result. Returns a boolean if $return_as_object is FALSE (this
   *   is the default) and otherwise an AccessResultInterface object.
   *   When a boolean is returned, the result of AccessInterface::isAllowed() is
   *   returned, i.e. TRUE means access is explicitly allowed, FALSE means
   *   access is either explicitly forbidden or "no opinion".
   */
  public function checkNamedRoute($route_name, array $parameters = [], AccountInterface $account = NULL, $return_as_object = FALSE);

  /**
   * Execute access checks against the incoming request.
   *
   * @param \Symfony\Component\HttpFoundation\Request $request
   *   The incoming request.
   * @param \Drupal\Core\Session\AccountInterface $account
   *   (optional) Run access checks for this account. Defaults to the current
   *   user.
   * @param bool $return_as_object
   *   (optional) Defaults to FALSE.
   *
   * @return bool|\Drupal\Core\Access\AccessResultInterface
   *   The access result. Returns a boolean if $return_as_object is FALSE (this
   *   is the default) and otherwise an AccessResultInterface object.
   *   When a boolean is returned, the result of AccessInterface::isAllowed() is
   *   returned, i.e. TRUE means access is explicitly allowed, FALSE means
   *   access is either explicitly forbidden or "no opinion".
   */
  public function checkRequest(Request $request, AccountInterface $account = NULL, $return_as_object = FALSE);

  /**
   * Checks a route against applicable access check services.
   *
   * Determines whether the route is accessible or not.
   *
   * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
   *   The route match.
   * @param \Drupal\Core\Session\AccountInterface $account
   *   (optional) Run access checks for this account. Defaults to the current
   *   user.
   * @param \Symfony\Component\HttpFoundation\Request $request
   *   Optional, a request. Only supply this parameter when checking the
   *   incoming request, do not specify when checking routes on output.
   * @param bool $return_as_object
   *   (optional) Defaults to FALSE.
   *
   * @return bool|\Drupal\Core\Access\AccessResultInterface
   *   The access result. Returns a boolean if $return_as_object is FALSE (this
   *   is the default) and otherwise an AccessResultInterface object.
   *   When a boolean is returned, the result of AccessInterface::isAllowed() is
   *   returned, i.e. TRUE means access is explicitly allowed, FALSE means
   *   access is either explicitly forbidden or "no opinion".
   */
  public function check(RouteMatchInterface $route_match, AccountInterface $account = NULL, Request $request = NULL, $return_as_object = FALSE);

}