update_user_level_from_caps example

if ( empty( $role ) ) {
            return;
        }

        if ( in_array( $role, $this->roles, true ) ) {
            return;
        }

        $this->caps[ $role ] = true;
        update_user_meta( $this->ID, $this->cap_key, $this->caps );
        $this->get_role_caps();
        $this->update_user_level_from_caps();

        /** * Fires immediately after the user has been given a new role. * * @since 4.3.0 * * @param int $user_id The user ID. * @param string $role The new role. */
        do_action( 'add_user_role', $this->ID, $role );
    }