private HybridPendingSplitsState deserializeLegacyHybridPendingSplitsState(
            int splitVersion, DataInputDeserializer in) throws IOException {
        SnapshotPendingSplitsState snapshotPendingSplitsState =
                deserializeLegacySnapshotPendingSplitsState(splitVersion, in);
        boolean isBinlogSplitAssigned = in.readBoolean();
        return new HybridPendingSplitsState(snapshotPendingSplitsState, isBinlogSplitAssigned);
    }
The {@link SimpleVersionedSerializer Serializer} for the {@link PendingSplitsState} of MySQL CDC
source.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/mysql-cdc/src/main/java/org/apache/inlong/sort/cdc/mysql/source/assigners/state/PendingSplitsStateSerializer.java