code: @Override
  	public CloseableIterator<CaptureSearchResult> getPrefixIterator(String prefix)
  		throws ResourceIndexNotAvailableException {
  		try {
  			return adaptIterator(getRecordIterator(prefix));
  		} catch (IOException e) {
  			e.printStackTrace();
  			throw new ResourceIndexNotAvailableException(e.getMessage()); 
  		}
  	}
docs: /* (non-Javadoc)
  @see org.archive.wayback.resourceindex.SearchResultSource#getPrefixIterator(java.lang.String)