@Override
	public Class<?> getColumnClass(int columnIndex) {
		if (columnIndex == getDataTypeColumn()) {
			return DataTypeInstance.class;
		}
		return String.class;
	}
Returns <code>String.class</code> regardless of <code>columnIndex</code>.

@param columnIndex  the column being queried
@return the String.class
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/compositeeditor/CompositeViewerModel.java