public void tryCreateGoogleClient(final Collection<Client> clients) {
        val id = getProperty(GOOGLE_ID);
        val secret = getProperty(GOOGLE_SECRET);
        if (StringUtils.isNotBlank(id) && StringUtils.isNotBlank(secret)) {
            val client = new Google2Client(id, secret);
            val scope = getProperty(GOOGLE_SCOPE);
            if (StringUtils.isNotBlank(scope)) {
                client.setScope(Google2Client.Google2Scope.valueOf(scope.toUpperCase()));
            }
            clients.add(client);
        }
    }
<p>tryCreateGoogleClient.</p>

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