default List<Cell> largest() {
        List<Cell> cells = new ArrayList<>(1);
        double maxValue = Double.MIN_VALUE;
        for (Iterator<Cell> i = cellIterator(); i.hasNext(); ) {
            Cell cell = i.next();
            if (cell.getValue() > maxValue) {
                cells.clear();
                cells.add(cell.detach());
                maxValue = cell.getDoubleValue();
            }
            else if (cell.getValue() == maxValue) {
                cells.add(cell.detach());
            }
        }
        return cells;
    }
Returns the cell(s) of this tensor having the highest value
vespajlib/src/main/java/com/yahoo/tensor/Tensor.java