code: public function load($currency)
      {
          foreach ($this->directories as $directory) {
              $file = $directory . '/' . $currency . '.php';
  
              if (file_exists($file) && is_file($file)) {
                  if (!is_readable($file)) {
                      throw new \RuntimeException(sprintf(
                          'Could not read file "%s".',
                          $file
                      ));
                  }
  
                  $prices = include $file;
                  $fixPrices = array();
  
                  foreach ($prices as $key => $value) {
                      $fixPrices[intval($key * 100)] = intval($value * 100);
                  }
  
                  return $fixPrices;
              }
          }
  
          throw PricesMapNotFoundException::createFromCurrency($currency);
      }
docs: {@inheritDoc}