code: public Sites getSitesInformation() throws IOException {
  		MwDumpFile sitesTableDump = getMostRecentDump(DumpContentType.SITES);
  		if (sitesTableDump == null) {
  			return null;
  		}
  
  		// Create a suitable processor for such dumps and process the file:
  		MwSitesDumpFileProcessor sitesDumpFileProcessor = new MwSitesDumpFileProcessor();
  		sitesDumpFileProcessor.processDumpFileContents(
  				sitesTableDump.getDumpFileStream(), sitesTableDump);
  
  		return sitesDumpFileProcessor.getSites();
  	}
docs: Processes the most recent dump of the sites table to extract information
  about registered sites.
  
  @return a Sites objects that contains the extracted information, or null
  if no sites dump was available (typically in offline mode without
  having any previously downloaded sites dumps)
  @throws IOException
  if there was a problem accessing the sites table dump or the
  dump download directory