-(AlfrescoRequest *) addTags:(NSArray *)tags toNode:(AlfrescoNode
                *)node completionBlock:(AlfrescoBOOLCompletionBlock)completionBlock - adds
            a list of tags to the specified node.
        Parameters
- (NSArray *)tags
 - The tags to apply to the specified node.
 - (AlfrescoNode *) node
 - The node to add tags to.
 - (AlfrescoBOOLCompletionBlock) completionBlock
 - The block that is called with the result on completion of the operation. The completion block has the format typedef void (^AlfrescoBOOLCompletionBlock)(BOOL succeeded, NSError *error).
 
Returns
(AlfrescoRequest *)
Example