captcha-module/controllers/oecaptchaaccountuser.php

<?php

/**
 * #PHPHEADER_OECAPTCHA_LICENSE_INFORMATION#
 */

class oecaptchaaccountuser extends oecaptchaaccountuser_parent
{
    /**
     * Class handling CAPTCHA image.
     *
     * @var object
     */
    protected $captcha = null;

    /**
     * Template variable getter. Returns object of handling CAPTCHA image
     *
     * @return object
     */
    public function getCaptcha()
    {
        if ( $this->captcha === null ) {
            $this->captcha = oxNew( 'oeCaptcha' );
        }

        return $this->captcha;
    }
}