-(AlfrescoRequest *) retrieveAllVersionsOfDocument:(AlfrescoDocument
        *)document completionBlock:(AlfrescoArrayCompletionBlock)completionBlock -
      retrieves all versions of the specified document.
    Parameters
- (AlfrescoDocument *) document
 - The document to return versions for.
 - (AlfrescoArrayCompletionBlock) completionBlock
 - The block that is called with the versions on completion of the operation. The completion block has the format typedef void (^AlfrescoArrayCompletionBlock)(NSArray *array, NSError *error).
 
Returns
(AlfrescoRequest *)
Example