code: public void waitForLogMessage(final String logSearchString, int waitTime) throws TimeoutException {
          WaitForContainer.waitForCondition(new LogChecker(this, logSearchString), waitTime, describe());
      }
docs: Stop and wait till given string will show in container output.
  
  @param logSearchString String to wait for in container output.
  @param waitTime Wait time.
  @throws TimeoutException On wait timeout.