checkNotNull(cell.getRowKey(), "row");
        checkNotNull(cell.getColumnKey(), "column");
        checkNotNull(cell.getValue(), "value");
        @SuppressWarnings("unchecked") // all supported methods are covariant
        Cell<R, C, V> immutableCell = (Cell<R, C, V>) cell;
        cells.add(immutableCell);
      } else {
        put(cell.getRowKey(), cell.getColumnKey(), cell.getValue());
      }

  private final @Nullable V[][] values;

  // For each cell in iteration order, the index of that cell's row key in the row key list.
  @SuppressWarnings("Immutable") // We don't modify this after construction.
  private final int[] cellRowIndices;

  // For each cell in iteration order, the index of that cell's column key in the column key list.

  private final @Nullable V[][] values;

  // For each cell in iteration order, the index of that cell's row key in the row key list.
  @SuppressWarnings("Immutable") // We don't modify this after construction.
  private final int[] cellRowIndices;

  // For each cell in iteration order, the index of that cell's column key in the column key list.

  CHECK_EQ(TF_OK, TF_GetCode(status)) << TF_Message(status);
  auto* cell1 = TFE_MonitoringGetCellSampler1(sampler1, "foo");
  TFE_MonitoringSamplerCellAdd(cell1, 1.0);
  TFE_MonitoringSamplerCellAdd(cell1, 2.0);
  TF_Buffer* result1 = TF_NewBuffer();
  TFE_MonitoringSamplerCellValue(cell1, result1);
  tensorflow::HistogramProto histogram1;
  EXPECT_TRUE(histogram1.ParseFromString(

        h ^= h << 5;
        hc[0] = h; // Record index for next time
      } else if (busy == 0 && cells == as && casBusy()) {
        boolean init = false;
        try { // Initialize table
          if (cells == as) {
            Cell[] rs = new Cell[2];
            rs[h & 1] = new Cell(x);
            cells = rs;
            init = true;
          }
        } finally {
          busy = 0;
        }

        h ^= h << 5;
        hc[0] = h; // Record index for next time
      } else if (busy == 0 && cells == as && casBusy()) {
        boolean init = false;
        try { // Initialize table
          if (cells == as) {
            Cell[] rs = new Cell[2];
            rs[h & 1] = new Cell(x);
            cells = rs;
            init = true;
          }
        } finally {
          busy = 0;
        }

    /**
     * Compares the specified object with this cell for equality. Two cells are equal when they have
     * equal row keys, column keys, and values.
     */
    @Override
    boolean equals(@CheckForNull Object obj);

    /**
     * Returns the hash code of this cell.
     *
     * <p>The hash code of a table cell is equal to {@link Objects#hashCode}{@code (e.getRowKey(),
     * e.getColumnKey(), e.getValue())}.
     */

    }

    Function<Cell<R, C, V1>, Cell<R, C, V2>> cellFunction() {
      return new Function<Cell<R, C, V1>, Cell<R, C, V2>>() {
        @Override
        public Cell<R, C, V2> apply(Cell<R, C, V1> cell) {
          return immutableCell(
              cell.getRowKey(), cell.getColumnKey(), function.apply(cell.getValue()));
        }
      };
    }

    @Override

    /**
     * Compares the specified object with this cell for equality. Two cells are equal when they have
     * equal row keys, column keys, and values.
     */
    @Override
    boolean equals(@CheckForNull Object obj);

    /**
     * Returns the hash code of this cell.
     *
     * <p>The hash code of a table cell is equal to {@link Objects#hashCode}{@code (e.getRowKey(),
     * e.getColumnKey(), e.getValue())}.
     */

<table>
    <tr><th>column1</th><th>column2</th></tr>
    <tr><td>cell1</td><td>cell2</td></tr>
</table>
'''

        when:
        def result = parser.parse(classMetaData, listener)

        then:
        format(result.docbook) == '''<table><thead><tr><td>column1</td><td>column2</td></tr></thead><tr><td>cell1</td><td>cell2</td></tr></table>'''
    }