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<?php

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

use stdClass;
/**
 * Identifies the sort field and sort order.
 */
class InvoiceSort implements \JsonSerializable
{
    /**
     * @var string
     */
    private $field;
    /**
     * @var string|null
     */
    private $order;
    /**
     * Returns Field.
     * The field to use for sorting.
     */
    public function getField() : string
    {
        return $this->field;
    }
    /**
     * Sets Field.
     * The field to use for sorting.
     *
     * @maps field
     */
    public function setField(string $field) : void
    {
        $this->field = $field;
    }
    /**
     * Returns Order.
     * The order (e.g., chronological or alphabetical) in which results from a request are returned.
     */
    public function getOrder() : ?string
    {
        return $this->order;
    }
    /**
     * Sets Order.
     * The order (e.g., chronological or alphabetical) in which results from a request are returned.
     *
     * @maps order
     */
    public function setOrder(?string $order) : void
    {
        $this->order = $order;
    }
    /**
     * 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 = [];
        $json['field'] = $this->field;
        if (isset($this->order)) {
            $json['order'] = $this->order;
        }
        $json = \array_filter($json, function ($val) {
            return $val !== null;
        });
        return !$asArrayWhenEmpty && empty($json) ? new stdClass() : $json;
    }
}