private function findWordListLength()
{
$words = $this->getParameter(self::PARAMETER_WORD_CACHE);
$this->minWordLength = INF;
$this->maxWordLength = 0;
foreach ($words as $word) {
$wordLength = \strlen($word);
$this->minWordLength = min($wordLength, $this->minWordLength);
$this->maxWordLength = max($wordLength, $this->maxWordLength);
}
}