code: @Override
      public void close() {
          this.createSegment.close();
          this.deleteSegment.close();
          this.updateConditional.close();
          this.updateUnconditional.close();
          this.removeConditional.close();
          this.removeUnconditional.close();
          this.getKeys.close();
          this.iterateKeys.close();
          this.iterateEntries.close();
      }
docs: region AutoCloseable Implementation