docs: private boolean putInBuffer(final LoggingEvent event) {
          putInBufferCounter.increment();
          Stopwatch t = putBufferTimeTracer.start();
          boolean hasPut = false;
          if (batcher.process(event)) {
              hasPut = true;
          } else {
              hasPut = false;
          }
          t.stop();
          return hasPut;
      }