waterml/src/main/java/ucar/nc2/ogc/gml/NcFeaturePropertyType.java
public static FeaturePropertyType initFeatureOfInterest(
            FeaturePropertyType featureOfInterest, StationTimeSeriesFeature stationFeat) {
        // wml2:MonitoringPoint
        MonitoringPointDocument monitoringPointDoc = MonitoringPointDocument.Factory.newInstance();
        NcMonitoringPointType.initMonitoringPointType(monitoringPointDoc.addNewMonitoringPoint(), stationFeat);
        featureOfInterest.set(monitoringPointDoc);

        return featureOfInterest;
    }
public static FeaturePropertyType initFeatureOfInterest(
            FeaturePropertyType featureOfInterest, StationTimeSeriesFeature stationFeat) {
        // wml2:MonitoringPoint
        MonitoringPointDocument monitoringPointDoc = MonitoringPointDocument.Factory.newInstance();
        NcMonitoringPointType.initMonitoringPointType(monitoringPointDoc.addNewMonitoringPoint(), stationFeat);
        featureOfInterest.set(monitoringPointDoc);

        return featureOfInterest;
    }
wml2:Collection/wml2:observationMember/om:OM_Observation/om:featureOfInterest