A collection represents a collection of products. Collections are unlike categories in that they cannot be nested underneath other collections. They are simply a flat way to group products.
id - Integer - Unique id of the collection
name - String - Name of the collection
content - String - A body of text that can be used to describe the collection
products - [Product] - Array of products assigned to the collection
images - [Image] - Array of images attached to the collection
primary_image - Image - Primary image of the collection
path - URL path to the collection on your store