code: private function ensurePropertyType($value)
      {
          $actualType = gettype($value);
          if ('object' === $actualType) {
              $actualType = get_class($value);
          }
  
          $valid = explode('|', $this->expectedType);
          $isValid = false;
          foreach ($valid as $check) {
              if ($check !== 'any' && \DTS\eBaySDK\checkPropertyType($check)) {
                  if ($check === $actualType) {
                      return;
                  }
                  $isValid = false;
              } else {
                  $isValid = true;
              }
          }
  
          if (!$isValid) {
              throw new Exceptions\InvalidPropertyTypeException($this->property, $this->expectedType, $actualType);
          }
      }
docs: Determines if the value is the correct type to assign to the array.
  
  @param mixed $value The value to check the type of.
  
  @throws \DTS\eBaySDK\Exceptions\InvalidPropertyTypeException If the value is the wrong type for the array.