public GetUsageStatisticsRequest withUnit(String unit) {
        setUnit(unit);
        return this;
    }
<p>
The currency unit you would like to view your usage statistics in. Current valid values are USD.
</p>

@param unit
       The currency unit you would like to view your usage statistics in. Current valid values are USD.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-guardduty/src/main/java/com/amazonaws/services/guardduty/model/GetUsageStatisticsRequest.java