fix the following java mongodb-driver-reactivestreams codeThe correct syntax for the methodsDocument Bson commongodbclientmodelAggregatesgroupNullable Document id BsonField fieldAccumulatorsString Bso

Aggregates.group(new Document("_id", new Document("timestamp", "$timestamp") .append("url", "$url"))) .first("breadcrumbObject.data.to").as("path"),

        Aggregates.group(new Document())
            .count().as("pathNum")
            .sum("callNum").as("totalCallNum"),