@Override
	public Class<?> getColumnClass(int columnIndex) {
		if (columnIndex == CUS_COL || columnIndex == XHS_COL) {
			return Integer.class;
		}
		return String.class;
	}
Returns the column class, which is a string (unless we're on the hash sizes which is integer).
Ghidra/Features/FunctionID/src/main/java/ghidra/feature/fid/debug/FidFunctionRecordTableModel.java