ReleasedObjectInfo
Provides the version state of a successfully released blob or container
            object.
            
                
The ETag contains a value that you can use to perform operations
            conditionally.  If the request version is 2011-08-18 or newer, the
            ETag value will be in quotes.
            
Returns the date and time the object was last modified. Any
            operation that modifies the blob or container, including an update
            of the object's metadata or properties, changes the last-modified
            time of the object.
            
Creates a new  ReleasedObjectInfo.