code: public Iterable<ListBlobItem> listLogBlobs(StorageService service, Date startTime, Date endTime,
              EnumSet<LoggingOperations> operations, BlobListingDetails details, BlobRequestOptions options,
              OperationContext operationContext) throws StorageException, URISyntaxException {
          Utility.assertNotNull("service", service);
          if (operations == null) {
              operations = EnumSet.allOf(LoggingOperations.class);
          }
  
          if (!(details == null || details.equals(BlobListingDetails.METADATA))) {
              throw new IllegalArgumentException(SR.INVALID_LISTING_DETAILS);
          }
  
          if (operations.equals(EnumSet.noneOf(LoggingOperations.class))) {
              throw new IllegalArgumentException(SR.INVALID_LOGGING_LEVEL);
          }
  
          EnumSet<BlobListingDetails> metadataDetails;
          if (details != null
                  && (details.equals(BlobListingDetails.METADATA) || !operations.equals(EnumSet
                          .allOf(LoggingOperations.class)))) {
              metadataDetails = EnumSet.of(BlobListingDetails.METADATA);
          }
          else {
              metadataDetails = EnumSet.noneOf(BlobListingDetails.class);
          }
  
          return new LogBlobIterable(this.getLogDirectory(service), startTime, endTime, operations, metadataDetails,
                  options, operationContext);
      }
docs: Returns an enumerable collection of log blobs, retrieved lazily.
  
  @param service
  A {@link StorageService} enumeration value that indicates which storage service to use.
  @param startTime
  A <code>java.util.Date</code> object representing the start of the time range for which logs should
  be retrieved.
  @param endTime
  A <code>java.util.Date</code> object representing the end of the time range for which logs should
  be retrieved.
  @param operations
  A {@link LoggingOperations} enumeration set that indicates which log types to return.
  @param details
  A {@link BlobListingDetails} enumeration set that indicates whether or not blob metadata should
  be returned. None or METADATA are the only valid values.
  @param options
  A {@link BlobRequestOptions} object that specifies additional options for the request.
  @param operationContext
  An {@link OperationContext} object that represents the context for the current operation.
  @return
  An enumerable collection of objects that implement {@link ListBlobItem} and are retrieved lazily.
  @throws StorageException
  @throws URISyntaxException