Previously, the flag could never have been set to true.
SIDENOTE: Awesome library! I will potentially file a few more PRs/Issues (for example, having the script determine "safe" throughput options based on the table value, i.e you give it a percentage, rather than a fixed value).
Make sure overwrite flag is actually valid
Thanks for the PR; good catch!
Being able to specify a percentage for read/write capacity is something I'd considered for a future update, so a PR on that would be great.
I'd also thought about having an option to dynamically increase the capacity on the table by a percentage and then drop it again once the operation completed. A somewhat bigger update, but not bad. Useful if you're only dumping occasionally given the limit of 4 downsizes/day.