/**
  * @since 2.4
  *
  * @param string $value
  *
  * @return string
  */
 protected function convertDoubleWidth($value)
 {
     return Localizer::convertDoubleWidth($value);
 }
 public function testConvertDoubleWidth()
 {
     $this->assertEquals('2000', Localizer::convertDoubleWidth('2000'));
     $this->assertEquals('aBc', Localizer::getInstance()->convertDoubleWidth('aBc'));
 }