docs: public static void handleStaleStatement(WSJdbcWrapper jdbcWrapper) {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEventEnabled())
              Tr.event(tc, "Encountered a Stale Statement: " + jdbcWrapper);
  
          if (jdbcWrapper instanceof WSJdbcObject)
              try {
                  WSJdbcConnection connWrapper =
                                  (WSJdbcConnection) ((WSJdbcObject) jdbcWrapper).getConnectionWrapper(); 
  
                  WSRdbManagedConnectionImpl mc = connWrapper.managedConn;
  
                  // Instead of closing the statements, mark them as
                  // not poolable so that they are prevented from being cached again when closed.
                  connWrapper.markStmtsAsNotPoolable(); 
  
                  // Clear out the cache.
                  if (mc != null)
                      mc.clearStatementCache();
              } catch (NullPointerException nullX) {
                  // No FFDC code needed; probably closed by another thread.
                  if (!((WSJdbcObject) jdbcWrapper).isClosed())
                      throw nullX; 
              }
      }