Thank you for your pull request and welcome to our community. We require contributors to sign our Contributor License Agreement, and we don't seem to have you on file. In order for us to review and merge your code, please sign up at https://code.facebook.com/cla - and if you have received this in error or have any questions, please drop us a line at [email protected]. Thanks!

Thank you for signing our Contributor License Agreement. We can now accept your code for this (and any) Facebook open source project. Thanks!

Given this issue #505 I don't think we want to emphasize this since it should not share exactly the same API as Map

That's a fair point. That said, the docs don't presently detail how one changes a record (using set, update etc) at all. That should be corrected and guidance given I think.

Johnny has a point. Right now the docs only show definition, construction and field removal. I wasn't aware of the other methods until I stumbled upon this issue.

This is actually just an implementation detail, and one that's likely to change in the future. It's a "Map" in the sense that it exposes get and set methods, but the HOF methods like filter and forEach make no sense on a Record.