Renamed `SDImageCache` `queryDiskCacheForKey:done:` to `queryCacheOperationForKey:done:`

@@ -132,11 +132,14 @@ typedef void(^SDWebImageCalculateSizeBlock)(NSUInteger fileCount, NSUInteger tot
 - (void)storeImageDataToDisk:(nullable NSData *)imageData forKey:(nullable NSString *)key;
 
 /**
- * Query the disk cache asynchronously.
+ * Query the cache asynchronously and call the completion when done.
  *
- * @param key The unique key used to store the wanted image
+ * @param key       The unique key used to store the wanted image
+ * @param doneBlock The completion block
+ *
+ * @return a NSOperation instance containing the cache op
  */
-- (nullable NSOperation *)queryDiskCacheForKey:(nullable NSString *)key done:(nullable SDCacheQueryCompletedBlock)doneBlock;
+- (nullable NSOperation *)queryCacheOperationForKey:(nullable NSString *)key done:(nullable SDCacheQueryCompletedBlock)doneBlock;
 
 /**
  * Query the memory cache synchronously.

@@ -324,7 +324,7 @@ FOUNDATION_STATIC_INLINE NSUInteger SDCacheCostForImage(UIImage *image) {
     return SDScaledImageForKey(key, image);
 }
 
-- (nullable NSOperation *)queryDiskCacheForKey:(nullable NSString *)key done:(nullable SDCacheQueryCompletedBlock)doneBlock {
+- (nullable NSOperation *)queryCacheOperationForKey:(nullable NSString *)key done:(nullable SDCacheQueryCompletedBlock)doneBlock {
     if (!doneBlock) {
         return nil;
     }

@@ -143,7 +143,7 @@
     }
     NSString *key = [self cacheKeyForURL:url];
 
-    operation.cacheOperation = [self.imageCache queryDiskCacheForKey:key done:^(UIImage *cachedImage, NSData *cachedData, SDImageCacheType cacheType) {
+    operation.cacheOperation = [self.imageCache queryCacheOperationForKey:key done:^(UIImage *cachedImage, NSData *cachedData, SDImageCacheType cacheType) {
         if (operation.isCancelled) {
             @synchronized (self.runningOperations) {
                 [self.runningOperations removeObject:operation];