rmat.csv">CsvSchema</a>&nbsp;schema)</code>
<div class="block">NOTE: unlike many other add methods, this method DOES check for, and
 discard, possible duplicate columns: that is, if this builder already
 has a column with same name as column to be added, existing column
 is retained and new column ignored.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../../../com/fasterxml/jackson/dataformat/csv/CsvWriteException.html" title="class in com.fasterxml.jackson.data