Change Variable Type	dirIteratorStack : LinkedList<Iterator<ListBlobItem>> to dirIteratorStack : AzureLinkedStack<Iterator<ListBlobItem>> in method private buildUpList(aCloudBlobDirectory CloudBlobDirectoryWrapper, aFileMetadataList ArrayList<FileMetadata>, maxListingCount int, maxListingDepth int) : void in class org.apache.hadoop.fs.azure.AzureNativeFileSystemStore