如何使用java的dynamodb geo库？

<dependency>
    <groupId>com.amazonaws</groupId>
    <artifactId>aws-java-sdk-dynamodb</artifactId>
    <version>1.12.0</version>
</dependency>
<dependency>
    <groupId>com.amazonaws</groupId>
    <artifactId>aws-java-sdk-geo</artifactId>
    <version>1.12.0</version>
</dependency>

AmazonDynamoDB client = AmazonDynamoDBClientBuilder.standard()
        .withRegion(Regions.US_EAST_1)
        .build();

DynamoDBMapper mapper = new DynamoDBMapper(client);
GeoDataManagerConfiguration config = new GeoDataManagerConfiguration(client, "TableName");
GeoDataManager geoDataManager = new GeoDataManager(config, mapper);

PutPointRequest putPointRequest = new PutPointRequest(new GeoPoint(latitude, longitude), "ItemID");
geoDataManager.putPoint(putPointRequest);

QueryRadiusRequest queryRadiusRequest = new QueryRadiusRequest(new GeoPoint(latitude, longitude), radiusInMeter);
List<GeoPoint> results = geoDataManager.queryRadius(queryRadiusRequest);