public CostCategory withCostCategoryArn(String costCategoryArn) {
        setCostCategoryArn(costCategoryArn);
        return this;
    }
<p>
The unique identifier for your Cost Category.
</p>

@param costCategoryArn
       The unique identifier for your Cost Category.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-costexplorer/src/main/java/com/amazonaws/services/costexplorer/model/CostCategory.java