public void updatePosition(BsonDocument resumeToken) {
        Objects.requireNonNull(resumeToken);
        offset.put(TIMESTAMP_FIELD, String.valueOf(decodeTimestamp(resumeToken).getValue()));
        offset.put(RESUME_TOKEN_FIELD, resumeToken.toJson());
    }
A structure describes a fine grained offset in a change log event including resumeToken and
clusterTime.
Copy from com.ververica:flink-connector-mongodb-cdc:2.3.0.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/mongodb-cdc/src/main/java/org/apache/inlong/sort/cdc/mongodb/source/offset/ChangeStreamOffset.java