interface NodeAccessControlHandlerInterface

interface NodeAccessControlHandlerInterface {
    
    /**
     * Gets the list of node access grants.
     *
     * This function is called to check the access grants for a node. It collects
     * all node access grants for the node from hook_node_access_records()
     * implementations, allows these grants to be altered via
     * hook_node_access_records_alter() implementations, and returns the grants to
     * the caller.
     *
     * @param \Drupal\node\NodeInterface $node
     *   The $node to acquire grants for.
     *
     * @return array
     *   The access rules for the node.
     */
    public function acquireGrants(NodeInterface $node);
    
    /**
     * Writes a list of grants to the database, deleting any previously saved ones.
     *
     * Modules that use node access can use this function when doing mass updates
     * due to widespread permission changes.
     *
     * Note: Don't call this function directly from a contributed module. Call
     * \Drupal\node\NodeAccessControlHandlerInterface::acquireGrants() instead.
     *
     * @param \Drupal\node\NodeInterface $node
     *   The node whose grants are being written.
     * @param $delete
     *   (optional) If false, does not delete records. This is only for optimization
     *   purposes, and assumes the caller has already performed a mass delete of
     *   some form. Defaults to TRUE.
     *
     * @deprecated in drupal:8.0.0 and is removed from drupal:9.0.0.
     *   Use \Drupal\node\NodeAccessControlHandlerInterface::acquireGrants().
     */
    public function writeGrants(NodeInterface $node, $delete = TRUE);
    
    /**
     * Creates the default node access grant entry on the grant storage.
     */
    public function writeDefaultGrant();
    
    /**
     * Deletes all node access entries.
     */
    public function deleteGrants();
    
    /**
     * Counts available node grants.
     *
     * @return int
     *   Returns the amount of node grants.
     */
    public function countGrants();
    
    /**
     * Checks all grants for a given account.
     *
     * @param \Drupal\Core\Session\AccountInterface $account
     *   A user object representing the user for whom the operation is to be
     *   performed.
     *
     * @return int
     *   Status of the access check.
     */
    public function checkAllGrants(AccountInterface $account);

}