public void setProjectOperation(ProjectOperation projectOperation) {
        this.projectOperation = projectOperation;
    }
<p>
An operation that projects columns. Operations that come after a projection can only refer to projected columns.
</p>

@param projectOperation
       An operation that projects columns. Operations that come after a projection can only refer to projected
       columns.
aws-java-sdk-quicksight/src/main/java/com/amazonaws/services/quicksight/model/TransformOperation.java