docs: private final void addHandle(WSJdbcConnection handle) throws ResourceException {
          (numHandlesInUse < handlesInUse.length - 1 ? handlesInUse : resizeHandleList())[numHandlesInUse++] = handle;
          if (!inRequest && dsConfig.get().enableBeginEndRequest)
              try {
                  inRequest = true;
                  mcf.jdbcRuntime.beginRequest(sqlConn);
              } catch (SQLException x) {
                  FFDCFilter.processException(x, getClass().getName(), "548", this);
                  throw new DataStoreAdapterException("DSA_ERROR", x, getClass());
              }
      }