A collection

Basic URI: 
content://net.lp.collectionista.products/collections
URI variants: 
For internal use only: content://net.lp.collectionista.products.collections
For example: content://net.lp.collectionista.products/collections/cd
For example (for internal use only): content://net.lp.collectionista.products.collections.cd
MIME types: 
vnd.android.cursor.item/vnd.collectionista.product.collection.*
For example: vnd.android.cursor.item/vnd.collectionista.product.collection.cd
vnd.android.cursor.dir/vnd.collectionista.product.collection.*
For example: vnd.android.cursor.dir/vnd.collectionista.product.collection.cd
vnd.android.cursor.item/vnd.collectionista.product.collection
vnd.android.cursor.dir/vnd.collectionista.product.collection

MIME type for a collection. A collection of items.

"vnd.android.cursor.item/vnd.collectionista.product.collection" is a general MIME type for a collection. Depending on "item" or "dir" a single collection or a list of collection.

Also specific MIME types exist for collections of a specific type. An example is "vnd.android.cursor.item/vnd.collectionista.product.collection.cd" for a CD collection. See other URIs (not all will be listed in this registry).

Originally for Collectionista, but every collection manager can use these.