ProductDownload

Extends Object. Represents a download associated with a product.

Properties
description	Type String The description for the download.
id	Type Number The System ID for the download.
title	Type String The title for the download.
url	Type Url The Url of the downloadable file.
visibility	Type String The visibility option for the download, which will be one of the following options: `public` - unprotected, available to all visitors `contact` - login protected, available to all registered users. File must also be stored within the private media folder. `purchase` - protected, requires purchase. File must also be stored within the private media folder. Note that downloads with contact and purchase privileges will only be returned if applicable to the current user.

Methods
exists()	Returns Boolean True if the file exists, else false if it is missing.
extension()	Returns String Gets the file extension for the download.
filename()	Returns String Gets the file name of the download including its extension.
size()	Returns String Gets a human readable file size.