public HeatMapAggregatedFieldWells withColumns(DimensionField... columns) {
        if (this.columns == null) {
            setColumns(new java.util.ArrayList<DimensionField>(columns.length));
        }
        for (DimensionField ele : columns) {
            this.columns.add(ele);
        }
        return this;
    }
<p>
The columns field well of a heat map.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setColumns(java.util.Collection)} or {@link #withColumns(java.util.Collection)} if you want to override
the existing values.
</p>

@param columns
       The columns field well of a heat map.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-quicksight/src/main/java/com/amazonaws/services/quicksight/model/HeatMapAggregatedFieldWells.java