code: public void sendDeleteRequest(String id) {
  		OutputStreamWriter writer = null;
  		try {
  			String deleteRequest = "CMD=Delete&RID=" + id;
  			URLConnection serviceConnection = setQBlastServiceProperties(serviceUrl.openConnection());
  			writer = new OutputStreamWriter(serviceConnection.getOutputStream());
  			writer.write(deleteRequest);
  			writer.flush();
  		} catch (IOException ignore) {
  			// ignore it this is an optional operation
  		} finally {
  			IOUtils.close(writer);
  		}
  	}
docs: Sends a delete request for given request id. Optional operation, ignores IOExceptions.<br/>
  Can be used after results of given search are no longer needed to be kept on Blast server
  
  @param id request id, as returned by {@code sendAlignmentRequest} method