Returns an array of ODataEntry* objects stored for the specified URL key. 
      Syntax
         
         
            - 
            (
            NSArray *
            ) 
            
               readEntriesForUrlKey
            
            : 
            (
            NSString *
            ) 
            urlKey 
            
               withError
            
            : 
            (
            NSError **
            ) 
            error
         
      
      Parameters
         
         
            - 
               urlKey – 
               URL that was originally used to retrieve the entries from the backend and cache it.
            
 
            - 
               error – 
               uninitialized error object filled in case of error scenarios.
            
 
         
       
      Returns
         array of 
ODataEntry* objects that were cached. 
 id<Caching> cacheLocal = [[Cache alloc] init];
 NSError* error = nil;
 NSArray* cachedEntries = [cacheLocal readEntriesForUrlKey:urlKey withError:&error];
 if (error)
 {
     NSLog("Read Error : %@", error);
     return;
 }