public void tryCreateTwitterClient(final Collection<Client> clients) {
        val id = getProperty(TWITTER_ID);
        val secret = getProperty(TWITTER_SECRET);
        if (StringUtils.isNotBlank(id) && StringUtils.isNotBlank(secret)) {
            Client twitterClient = new TwitterClient(id, secret);
            clients.add(twitterClient);
        }
    }
<p>tryCreateTwitterClient.</p>

@param clients a {@link java.util.List} object
pac4j-config/src/main/java/org/pac4j/config/builder/OAuthBuilder.java