flag: add FlagSet example Add an example for using FlagSet. Fixes #36307 Change-Id: I0bf5805bd836a4f2e9632aafe22dc3eeb1164dcd GitHub-Last-Rev: 79e53040cbc2658a71385b644107f8ea54132c99 GitHub-Pull-Request: golang/go#64443 Reviewed-on: https://go-review.googlesource.com/c/go/+/545736 Auto-Submit: Ian Lance Taylor <[email protected]> LUCI-TryBot-Result: Go LUCI <[email protected]> Reviewed-by: Dmitri Shuralyov <[email protected]> Reviewed-by: Christopher Taylor <[email protected]> Reviewed-by: Carlos Amedee <[email protected]> Reviewed-by: Rob Pike <[email protected]>
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