code: protected void onKeepAliveFired(ChannelHandlerContext ctx, CouchbaseRequest keepAliveRequest) {
          if (env().continuousKeepAliveEnabled() && LOGGER.isTraceEnabled()) {
              LOGGER.trace(logIdent(ctx, endpoint) + "Continuous KeepAlive fired");
          } else if (LOGGER.isDebugEnabled()) {
              LOGGER.debug(logIdent(ctx, endpoint) + "KeepAlive fired");
          }
      }
docs: Override to customize the behavior when a keep alive has been triggered and a keep alive request sent.
  
  The default behavior is to log the event at debug level.
  
  @param ctx the channel context.
  @param keepAliveRequest the keep alive request that was sent when keep alive was triggered