public function segmentPage(
    $title,
    $removeTags,
    $segmentBreakingTags,
    $revisionId = null
) {
    $cache = MediaWikiServices::getInstance()->getMainWANObjectCache();
    $page = WikiPage::factory( $title );
    if ($revisionId == null) {
        $revisionId = $page->getLatest();
    }
    $cacheKey = $cache->makeKey( 'Wikispeech.segments', $revisionId );
    $segments = $cache->get( $cacheKey );
    if ( $segments == null ) {
        if ($revisionId != $page->getLatest()){
            throw new MWException( 'An outdated or invalid revision id was provided' );
        }
        $cleanedText =
            $this->cleanPage( $page, $removeTags, $segmentBreakingTags );
        $segments = $this->segmentSentences( $cleanedText );
        $cache->set( $cacheKey, $segments, 3600 );
    }
    return $segments;
}