public String getUnit() {
        return this.unit;
    }
<p>
The unit for the metric data request. Valid units depend on the metric data being requested. For the valid units
with each available metric, see the <code>metricName</code> parameter.
</p>

@return The unit for the metric data request. Valid units depend on the metric data being requested. For the
        valid units with each available metric, see the <code>metricName</code> parameter.
@see MetricUnit
aws-java-sdk-lightsail/src/main/java/com/amazonaws/services/lightsail/model/GetRelationalDatabaseMetricDataRequest.java