code: public ClientStatsContext fetch() {
          m_current = m_distributor.getStatsSnapshot();
          m_currentIO = m_distributor.getIOStatsSnapshot();
          m_currentTS = System.currentTimeMillis();
          m_currentAffinity = m_distributor.getAffinityStatsSnapshot();
          return this;
      }
docs: Fetch current statistics from the client internals. Don't
  update the baseline. This will increase the range covered
  by any {@link ClientStats} instances returned from this
  context.
  
  @return A <code>this</code> pointer for chaining calls.