Comment on page
Collect files by attribute name
collect(attributeName)collect files with an attribute. It process each file in a set and if a file contains an attribute, it will be collected into a collection.
The following methods are added to the
attributeName()(in plural) - returns all files with the attribute defined
This operation is cool when you need to collect the pages of same kind. For example, you can collect all blog posts, or all project-related pages.