Summary:
I had to do a little trial and error to find this out. Would be helpful to have it in the docs.
I'm not sure if there's a standard wording or format you prefer for indicating handler function params.
Closes https://github.com/facebook/react-native/pull/7312
Differential Revision: D3245838
fb-gh-sync-id: 89433c036f7287d9efb69605180734dbc4df4df3
fbshipit-source-id: 89433c036f7287d9efb69605180734dbc4df4df3