code: @WithBridgeMethods(value = SQLInsertClause.class, castRequired = true)
      public C addBatch() {
          if (subQueryBuilder != null) {
              subQuery = subQueryBuilder.select(values.toArray(new Expression[values.size()])).clone();
              values.clear();
          }
          batches.add(new SQLInsertBatch(columns, values, subQuery));
          columns.clear();
          values.clear();
          subQuery = null;
          return (C) this;
      }
docs: Add the current state of bindings as a batch item
  
  @return the current object