public Csv withColumnNames(String... columnNames) {
        if (this.columnNames == null) {
            setColumnNames(new java.util.ArrayList<String>(columnNames.length));
        }
        for (String ele : columnNames) {
            this.columnNames.add(ele);
        }
        return this;
    }
<p>
The column names specified in the .csv file.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setColumnNames(java.util.Collection)} or {@link #withColumnNames(java.util.Collection)} if you want to
override the existing values.
</p>

@param columnNames
       The column names specified in the .csv file.
@return Returns a reference to this object so that method calls can be chained together.
@see ColumnName
aws-java-sdk-iotsitewise/src/main/java/com/amazonaws/services/iotsitewise/model/Csv.java