public function encode($value, Field $field, Codec $codec = null)
    {
        if ($value instanceof BigNumber) {
            return $value->getValue();
        }

        return '0';
    }
public function encode($value, Field $field, Codec $codec = null)
    {
        if ($value instanceof BigNumber) {
            return $value->getValue();
        }

        return '0';
    }
{@inheritdoc}