public void setTotalRunningHours(String totalRunningHours) {
        this.totalRunningHours = totalRunningHours;
    }
<p>
The total instance usage, in hours.
</p>

@param totalRunningHours
       The total instance usage, in hours.
aws-java-sdk-costexplorer/src/main/java/com/amazonaws/services/costexplorer/model/CoverageHours.java