docs: @Override
      public ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern) throws SQLException
      {
          checkClosed();
          VoltTable vtable = new VoltTable(
                  new ColumnInfo("TABLE_CAT", VoltType.STRING),
                  new ColumnInfo("TABLE_SCHEM", VoltType.STRING),
                  new ColumnInfo("TABLE_NAME", VoltType.STRING),
                  new ColumnInfo("GRANTOR", VoltType.STRING),
                  new ColumnInfo("GRANTEE", VoltType.STRING),
                  new ColumnInfo("PRIVILEGE", VoltType.STRING),
                  new ColumnInfo("IS_GRANTABLE", VoltType.STRING)
          );
          //NB: @SystemCatalog(?) will need additional support if we want to
          // populate the table.
          JDBC4ResultSet res = new JDBC4ResultSet(this.sysCatalog, vtable);
          return res;
      }