ProductDownload

Extends Object. Represents a download associated with a product.

Properties
`description` `String` The description for the download.
`id` `Number` The System ID for the download.
`title` `String` The title for the download.
`url` `Url` The Url of the downloadable file.
`visibility` `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()` `Boolean` True if the file exists, else false if it is missing.
`extension()` `String` Gets the file extension for the download.
`filename()` `String` Gets the file name of the download including its extension.
`size()` `String` Gets a human readable file size.