code: public void closeLogger(String loggerName) {
          if (this.openLoggers.containsKey(loggerName)) {
              try {
                  this.openLoggers.get(loggerName).close();
              } catch (Exception e) {
                  throw new DelegatedRuntimeException(e);
              }
              this.openLoggers.remove(loggerName);
          }
      }
docs: cloes a logger. This logger can be re-reopen
  
  @param loggerName