interface RoleInterface

interface RoleInterface extends ConfigEntityInterface {
    
    /**
     * Role ID for anonymous users; should match the 'role' entity ID.
     */
    const ANONYMOUS_ID = AccountInterface::ANONYMOUS_ROLE;
    
    /**
     * Role ID for authenticated users; should match the 'role' entity ID.
     */
    const AUTHENTICATED_ID = AccountInterface::AUTHENTICATED_ROLE;
    
    /**
     * Returns a list of permissions assigned to the role.
     *
     * @return array
     *   The permissions assigned to the role.
     */
    public function getPermissions();
    
    /**
     * Checks if the role has a permission.
     *
     * @param string $permission
     *   The permission to check for.
     *
     * @return bool
     *   TRUE if the role has the permission, FALSE if not.
     */
    public function hasPermission($permission);
    
    /**
     * Grant permissions to the role.
     *
     * @param string $permission
     *   The permission to grant.
     *
     * @return $this
     */
    public function grantPermission($permission);
    
    /**
     * Revokes a permissions from the user role.
     *
     * @param string $permission
     *   The permission to revoke.
     *
     * @return $this
     */
    public function revokePermission($permission);
    
    /**
     * Indicates that a role has all available permissions.
     *
     * @return bool
     *   TRUE if the role has all permissions.
     */
    public function isAdmin();
    
    /**
     * Sets the role to be an admin role.
     *
     * @param bool $is_admin
     *   TRUE if the role should be an admin role.
     *
     * @return $this
     */
    public function setIsAdmin($is_admin);
    
    /**
     * Returns the weight.
     *
     * @return int
     *   The weight of this role.
     */
    public function getWeight();
    
    /**
     * Sets the weight to the given value.
     *
     * @param int $weight
     *   The desired weight.
     *
     * @return $this
     */
    public function setWeight($weight);

}