protected static function blockBegin(&$context, $vars) {
        $v = isset($vars[1]) ? static::getVariableNameOrSubExpression($context, $vars[1]) : array(null, array());
        if (!$context['flags']['nohbh']) {
            switch (isset($vars[0][0]) ? $vars[0][0] : null) {
                case 'if':
                    $includeZero = (isset($vars['includeZero'][1]) && $vars['includeZero'][1]) ? 'true' : 'false';
                    return "{$context['ops']['cnd_start']}(" . static::getFuncName($context, 'ifvar', $v[1]) . "\$cx, {$v[0]}, {$includeZero})){$context['ops']['cnd_then']}";
                case 'unless':
                    return "{$context['ops']['cnd_start']}(!" . static::getFuncName($context, 'ifvar', $v[1]) . "\$cx, {$v[0]}, false)){$context['ops']['cnd_then']}";
                case 'each':
                    return static::section($context, $vars, true);
                case 'with':
                    if ($r = static::with($context, $vars)) {
                        return $r;
                    }
            }
        }

        return static::section($context, $vars);
    }