public void setDistanceUnit(String distanceUnit) {
        this.distanceUnit = distanceUnit;
    }
<p>
The unit of measurement for route distances.
</p>

@param distanceUnit
       The unit of measurement for route distances.
@see DistanceUnit
aws-java-sdk-location/src/main/java/com/amazonaws/services/location/model/CalculateRouteMatrixSummary.java