/**
* Add timestamps
*
* @param string $table_name the name of the table
* @param string $created_column_name Created at column name
* @param string $updated_column_name Updated at column name
*
* @return boolean
*/
public function add_timestamps($table_name, $created_column_name = "created_at", $updated_column_name = "updated_at")
{
return $this->_adapter->add_timestamps($table_name, $created_column_name, $updated_column_name);
}