ShortLinkService.getShortLink Method
        
 Gets a short link from the specified long link.
 
         
        Parameters
        
            - longLink
            
 
            - 
                
Type: String
The long link to get the short link for. 
            - fileSystemEntryId
            
 
            - 
                
Type: String
    (optional) The ID of the file system entry to which the short link corresponds, or NULL if the short
    link does not correspond to a file system entry.
 
Optional: True 
            - timeToLive
            
 
            - 
                
Type: String
    (optional) A timespan-formatted string representing the amount of time the short link should be valid. If
    not specified, the short link will never expire.
 
Optional: True 
        
        Return Value
        
Type: jQuery.Promise
        
A promise object that is resolved when the call is complete.