code: public int addPTableOwner(ThinPhysicalTableOwner pTableOwner)
      {
          if (pTableOwner != null)
          {
              m_lTimeLastUsed = System.currentTimeMillis();
              m_setPTableOwners.add(pTableOwner);
              pTableOwner.setPTable(this);
          }
          return m_setPTableOwners.size();
      }
docs: Bump the use count.
  This doesn't have to be synchronized because getPTable in PDatabase is.
  @param pTableOwner The table owner to add.
  @return The new use count.