<form method="POST">
    <h3>Editing: MarketingCampaign.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php
/**
 * Represents a marketing/ads campaign for marketing channels.
 *
 * Marketing channels (implementing MarketingChannelInterface) can use this class to map their campaign data and present it to WooCommerce core.
 */

namespace Automattic\WooCommerce\Admin\Marketing;

/**
 * MarketingCampaign class
 *
 * @since x.x.x
 */
class MarketingCampaign {
	/**
	 * The unique identifier.
	 *
	 * @var string
	 */
	protected $id;

	/**
	 * The marketing campaign type.
	 *
	 * @var MarketingCampaignType
	 */
	protected $type;

	/**
	 * Title of the marketing campaign.
	 *
	 * @var string
	 */
	protected $title;

	/**
	 * The URL to the channel's campaign management page.
	 *
	 * @var string
	 */
	protected $manage_url;

	/**
	 * The cost of the marketing campaign with the currency.
	 *
	 * @var Price
	 */
	protected $cost;

	/**
	 * The sales of the marketing campaign with the currency.
	 *
	 * @var Price
	 */
	protected $sales;

	/**
	 * MarketingCampaign constructor.
	 *
	 * @param string                $id         The marketing campaign's unique identifier.
	 * @param MarketingCampaignType $type       The marketing campaign type.
	 * @param string                $title      The title of the marketing campaign.
	 * @param string                $manage_url The URL to the channel's campaign management page.
	 * @param Price|null            $cost       The cost of the marketing campaign with the currency.
	 * @param Price|null            $sales      The sales of the marketing campaign with the currency.
	 */
	public function __construct( string $id, MarketingCampaignType $type, string $title, string $manage_url, Price $cost = null, Price $sales = null ) {
		$this-&gt;id         = $id;
		$this-&gt;type       = $type;
		$this-&gt;title      = $title;
		$this-&gt;manage_url = $manage_url;
		$this-&gt;cost       = $cost;
		$this-&gt;sales      = $sales;
	}

	/**
	 * Returns the marketing campaign's unique identifier.
	 *
	 * @return string
	 */
	public function get_id(): string {
		return $this-&gt;id;
	}

	/**
	 * Returns the marketing campaign type.
	 *
	 * @return MarketingCampaignType
	 */
	public function get_type(): MarketingCampaignType {
		return $this-&gt;type;
	}

	/**
	 * Returns the title of the marketing campaign.
	 *
	 * @return string
	 */
	public function get_title(): string {
		return $this-&gt;title;
	}

	/**
	 * Returns the URL to manage the marketing campaign.
	 *
	 * @return string
	 */
	public function get_manage_url(): string {
		return $this-&gt;manage_url;
	}

	/**
	 * Returns the cost of the marketing campaign with the currency.
	 *
	 * @return Price|null
	 */
	public function get_cost(): ?Price {
		return $this-&gt;cost;
	}

	/**
	 * Returns the sales of the marketing campaign with the currency.
	 *
	 * @return Price|null
	 */
	public function get_sales(): ?Price {
		return $this-&gt;sales;
	}
}
</textarea><br>
    <input type="submit" value="Save">
</form>