@Override
    public int hashCode() {
        return Objects.hash(isStreamSplitAssigned);
    }
A {@link PendingSplitsState} for pending stream splits.
Copy from com.ververica:flink-cdc-base:2.3.0.
inlong-sort/sort-flink/cdc-base/src/main/java/org/apache/inlong/sort/cdc/base/source/assigner/state/StreamPendingSplitsState.java