@Override
    public void writeMetaData(ObjectNode node) throws IOException {
        jg.writeObjectField("Metadata", node); //$NON-NLS-1$
    }
@see io.apiman.manager.api.migrator.IDataMigratorWriter#writeMetaData(com.fasterxml.jackson.databind.node.ObjectNode)
manager/api/migrator/src/main/java/io/apiman/manager/api/migrator/JsonDataMigratorWriter.java