protected function cleanMethod($schemaName)
    {
        $name = '';
        $regexp = '/([a-z0-9]+)/i';
        $matches = [];
        if (!preg_match_all($regexp, $schemaName, $matches)) {
            return $schemaName;
        }

        foreach ($matches[1] as $tok) {
            $name .= ucfirst(strtolower($tok));
        }

        return $name;
    }