code: @Override
      public void flush() {
          // in-memory - do nothing
          if (com.ibm.ejs.ras.TraceComponent.isAnyTracingEnabled() && LoggingUtil.SESSION_LOGGER_CORE.isLoggable(Level.FINE)) {
              LoggingUtil.SESSION_LOGGER_CORE.logp(Level.FINE, methodClassName, "flush", "");
          }
      }
docs: /*
  @see com.ibm.wsspi.session.ISession#flush()