@Override
    public boolean exists() {
        return latestTables != null && !latestTables.isEmpty();
    }
Determine whether the {@link FlinkDatabaseSchemaHistory} is compatible with the specified
state.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/oracle-cdc/src/main/java/org/apache/inlong/sort/cdc/oracle/debezium/internal/FlinkDatabaseSchemaHistory.java