public KuduOutputFormat finish() {
            if (kuduOutputFormat.kuduMasters == null) {
                throw new IllegalArgumentException("No kuduMasters supplied.");
            }

            if (kuduOutputFormat.tableName == null) {
                throw new IllegalArgumentException("No tablename supplied.");
            }

            return kuduOutputFormat;
        }
Deal response when operation apply.
At MANUAL_FLUSH mode, response returns after {@link KuduSession#flush()}.
But at AUTO_FLUSH_SYNC mode, response returns after {@link KuduSession#apply(Operation)}

@param response {@link OperationResponse} response after operation done.
kudu/kudu-sink/src/main/java/com/dtstack/flink/sql/sink/kudu/KuduOutputFormat.java