public ProjectOperation withProjectedColumns(String... projectedColumns) {
        if (this.projectedColumns == null) {
            setProjectedColumns(new java.util.ArrayList<String>(projectedColumns.length));
        }
        for (String ele : projectedColumns) {
            this.projectedColumns.add(ele);
        }
        return this;
    }
<p>
Projected columns.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setProjectedColumns(java.util.Collection)} or {@link #withProjectedColumns(java.util.Collection)} if you
want to override the existing values.
</p>

@param projectedColumns
       Projected columns.
@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/ProjectOperation.java