Prerequisite for ARROW-6235 (converting BinaryArray data to R).

Reporter: Neal Richardson / @nealrichardson
Assignee: Neal Richardson / @nealrichardson

Related issues:

• [R] Conversion from arrow::BinaryArray to R character vector not implemented (is depended upon by)

PRs and other links:

• GitHub Pull Request #6554

_{Note: This issue was originally created as ARROW-8024. Please see the migration documentation for further details.}