src/Builders/RefundBuilder.php
/**
     * Set the amount of the transaction as minor units to refund.
     *
     * @param  int  $amount
     * @return self
     */
Set the amount of the transaction as minor units to refund.
@param  int  $amount
@return self
Set the amount of the transaction as minor units to refund . @param int $amount @return self
public function amount(int $amount): self
    {
        $this->amount = $amount;
        return $this;
    }
public function amount ( int $ amount ) : self { $ this -> amount = $ amount ; return $ this ; }
Set the amount of the transaction as minor units to refund.
Set the amount of the transaction as minor units to refund .