.buildView(BlobStoreContext.class);
// threadsafe according to https://jclouds.apache.org/documentation/userguide/blobstore-guide/
BlobStore store = ctx.getBlobStore();
ListContainerOptions options = new ListContainerOptions().maxResults(batchSize).afterMarker(lastMarker);
PageSet<? extends StorageMetadata> pages = store.list(container, options);
//Gets key within the time range specified
NavigableMap<Long, String> mapWithinRange = getBlobsWithinRange(pages);
//Download only for keys within that range