public function getColumnSize($name, $caseInsensitive = false)
    {
        if ($caseInsensitive) {
            foreach ($this->columnsSize as $forName => $size) {
                if (0 === strcasecmp($forName, $name)) {
                    return $size;
                }
            }
            return null;
        }
        return isset($this->columnsSize[$name]) ? $this->columnsSize[$name] : null;
    }