public ScatterPlotCategoricallyAggregatedFieldWells withXAxis(MeasureField... xAxis) {
        if (this.xAxis == null) {
            setXAxis(new java.util.ArrayList<MeasureField>(xAxis.length));
        }
        for (MeasureField ele : xAxis) {
            this.xAxis.add(ele);
        }
        return this;
    }
<p>
The x-axis field well of a scatter plot.
</p>
<p>
The x-axis is aggregated by category.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setXAxis(java.util.Collection)} or {@link #withXAxis(java.util.Collection)} if you want to override the
existing values.
</p>

@param xAxis
       The x-axis field well of a scatter plot.</p>
       <p>
       The x-axis is aggregated by category.
@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/ScatterPlotCategoricallyAggregatedFieldWells.java