public function process_children( $type ) {
		$this->struct[ $type ] = array_filter( $this->struct[ $type ], 'is_array' );
		foreach ( $this->struct[ $type ] as $sub_slug => $sub_structure ) {
			if ( ! empty( $sub_structure['id'] ) ) {
				$sub_slug = $sub_structure['id'];
			}

			$this->{$type}( $sub_slug, $sub_structure );
		}

	}