A collection of records for a certain Post Type. This object is returned when a content type for posts' plural name is called on site, e.g. site.pages.
This is a specific collection for posts. It accepts the methods below, and everything described in https://plate.atlassian.net/wiki/pages/resumedraft.action?draftId=375160837 collection.
posts_collection.index
Returns the index post (the post with the index template).
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