@Override
	public final int getColumnCount() {
		return tableColumns.size();
	}
Returns true if the column indicated by the index in the model is a default column (meaning
that it was specified by the model and not discovered).

@param modelIndex the index of the column in the model.
@return true if the column is a default.
Ghidra/Framework/Docking/src/main/java/docking/widgets/table/GDynamicColumnTableModel.java