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<?php

declare (strict_types=1);
namespace WPForms\Vendor\Square\Models;

use stdClass;
class PaymentBalanceActivityFreeProcessingDetail implements \JsonSerializable
{
    /**
     * @var array
     */
    private $paymentId = [];
    /**
     * Returns Payment Id.
     * The ID of the payment associated with this activity.
     */
    public function getPaymentId() : ?string
    {
        if (\count($this->paymentId) == 0) {
            return null;
        }
        return $this->paymentId['value'];
    }
    /**
     * Sets Payment Id.
     * The ID of the payment associated with this activity.
     *
     * @maps payment_id
     */
    public function setPaymentId(?string $paymentId) : void
    {
        $this->paymentId['value'] = $paymentId;
    }
    /**
     * Unsets Payment Id.
     * The ID of the payment associated with this activity.
     */
    public function unsetPaymentId() : void
    {
        $this->paymentId = [];
    }
    /**
     * Encode this object to JSON
     *
     * @param bool $asArrayWhenEmpty Whether to serialize this model as an array whenever no fields
     *        are set. (default: false)
     *
     * @return array|stdClass
     */
    #[\ReturnTypeWillChange]
    public function jsonSerialize(bool $asArrayWhenEmpty = \false)
    {
        $json = [];
        if (!empty($this->paymentId)) {
            $json['payment_id'] = $this->paymentId['value'];
        }
        $json = \array_filter($json, function ($val) {
            return $val !== null;
        });
        return !$asArrayWhenEmpty && empty($json) ? new stdClass() : $json;
    }
}