public CellName create(Composite prefix, ColumnDefinition column) {
// We ignore the column because it's just the COMPACT_VALUE name which is not store in the cell
// name (and it can be null anyway)
assert prefix.size() == fullSize;
if (prefix instanceof CellName) return (CellName) prefix;
assert prefix instanceof CompoundComposite;
CompoundComposite lc = (CompoundComposite) prefix;
assert lc.elements.length == lc.size;
return new CompoundDenseCellName(lc.elements);
}
