Describe the enhancement requested

We are currently rewriting some of our components to use Arrow and when appending data to the record, we want to basically deduplicate/aggregate the data before adding new rows. For that, we either need to keep track of the previously appended data outside of Arrow, or (and that's what we want to enhance) we read back the data from the underlying builders.

I was able to find several occurrences of reading values from builders.

We want to be able to do the same for BooleanBuilders and read back individual values at a given index.

Component(s)

Go