-(AlfrescoRequest *) retrieveCheckedOutDocumentsWithListingContext:
        listingContext:(AlfrescoListingContext *)listingContext
        completionBlock:(AlfrescoPagingResultCompletionBlock)completionBlock - retrieves a
      paged list of of documents checked out by the authenticated user.
    Parameters
- (AlfrescoListingContext *) listingContext
 - The listing context with a paging definition that is used to retrieve the version history of the document.
 - (AlfrescoPagingResultCompletionBlock) completionBlock
 - The block that is called on completion of the operation. The completion block has the format typedef void (^AlfrescoPagingResultCompletionBlock)(AlfrescoPagingResult *pagingResult, NSError *error).
 
Returns
(AlfrescoRequest *)
Example