Extensions are not supported in proto3 with the exception of custom options
for Protobuf itself, that is correct.
On Tue, May 19, 2020, 5:41 AM 'Jack Lu' via Protocol Buffers <
protobuf@googlegroups.com> wrote:
> In the developer doc:
>
In the developer doc:
https://developers.google.com/protocol-buffers/docs/proto3#custom_options,
it mentions the following:
Protocol Buffers also allows you to define and use your own options. This
is an *advanced feature* which most people don't need. If you do think you
need to create your
