-(AlfrescoRequest *)
        retrievePendingSitesWithCompletionBlock:(AlfrescoSite *)site
        completionBlock:(AlfrescoArrayCompletionBlock)completionBlock - Retrieves a list of
      sites the current user has requested to join. An empty array is returned if there are no
      outstanding requests. 
    Parameters
- (AlfrescoSite *) site
 - The site to be joined.
 - (AlfrescoArrayCompletionBlock) completionBlock
 - The block that is called with the array of pending sites. The block has the format typedef void (^AlfrescoArrayCompletionBlock)(NSArray *array, NSError *error).
 
Returns
(AlfrescoRequest *)
Example