public function appendToStructureSql($statement, $comment = '')
    {
        if ($structure_sql_path = $this->getStructureSqlPath()) {
            $current_content = file_get_contents($structure_sql_path);

            if ($current_content) {
                $current_content .= "\n\n\n\n";
            }

            if ($comment) {
                $current_content .= "# $comment\n";
            }

            file_put_contents($structure_sql_path, $current_content . $statement);
        }
    }