src/Client.php
public function withdraw($currency, $quantity, $address, $paymentId=null) {
        return $this->account('withdraw', [
            'currency' => $currency,
            'quantity' => $quantity,
            'address' => $address,
            'paymentid' => $paymentId,
        ]);
    }
public function withdraw($currency, $quantity, $address, $paymentId=null) {
        return $this->account('withdraw', [
            'currency' => $currency,
            'quantity' => $quantity,
            'address' => $address,
            'paymentid' => $paymentId,
        ]);
    }
Used to withdraw funds from your account.
note: please account for txfee.

@param string $currency a string literal for the currency (ex: LTC)
@param string|float $quantity the quantity of coins to withdraw
@param string $address the address where to send the funds.
@param string $paymentId used for CryptoNotes/BitShareX/Nxt optional field (memo/paymentid)
@return array Returns you the withdrawal uuid