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System generated property. The resource ID (_rid) is a unique identifier that is also hierarchical per the resource stack on the resource model. It is used internally for placement and navigation of the item resource.
System generated property. The unique addressable URI for the resource.
System generated property. Specifies the last updated timestamp of the resource. The value is a timestamp.
Required. User settable property. Unique name that identifies the item, that is, no two items share the same ID within a database. The id must not exceed 255 characters.
System generated property. Represents the resource etag required for optimistic concurrency control.