code: @Override
  	public boolean execute(final LineReader reader, final String[] parts, final SqlConfig sqlConfig,
  			final Properties props) {
  		Terminal terminal = reader.getTerminal();
  		terminal.writer().println("SQL REPL end.");
  		terminal.writer().flush();
  
  		try {
  			SqlManager sqlManager = sqlConfig.getSqlManager();
  			sqlManager.shutdown();
  		} catch (Exception ex) {
  			// do nothing
  		}
  		return false;
  	}
docs: {@inheritDoc}
  
  @see jp.co.future.uroborosql.client.command.ReplCommand#execute(org.jline.reader.LineReader, java.lang.String[], jp.co.future.uroborosql.config.SqlConfig, java.util.Properties)