lib/GoCardless/Utils.php
public static function singularize($string) {

    if (substr($string, -1) == 's') {
      return substr($string, 0, -1);
    } elseif (substr($string, -1) == 'i') {
      return substr($string, 0, -1) . 'us';
    } else {
      return $string;
    }

  }
public static function singularize($string) {

    if (substr($string, -1) == 's') {
      return substr($string, 0, -1);
    } elseif (substr($string, -1) == 'i') {
      return substr($string, 0, -1) . 'us';
    } else {
      return $string;
    }

  }
Convert a word to the singular

@param string $string The string to process

@return string The result