<document source="test data">
    <system_message level="3" line="1" source="test data" type="ERROR">
        <paragraph>
            3 stub column(s) specified but only 2 column(s) of data supplied ("csv-table" directive).
        <literal_block xml:space="preserve">
            .. csv-table::
               :stub-columns: 3
            
               "column 1", "column 2"