public class MetricsData {

    private final Map<String, ValueMetricsData> metricsMap;

    @BsonCreator
    public MetricsData(
            @BsonProperty("metrics") final Map<String, ValueMetricsData> metricsMap) {
        metricsMap = metricsMap;
    }

    public Map<String, ValueMetricsData> getMetricsMap() {
        return metricsMap;
    }
}
 

[PropertyModel{propertyName='metricsMap', readName='metricsMap', writeName='metricsMap', typeData=TypeData{type=Map, typeParameters=[String, ValueMetricsData]}},
 PropertyModel{propertyName='metrics', readName='null', writeName='metrics', typeData=TypeData{type=Map}}]