[deprecation warning]: ostruct.rb was loaded from the standard library, but will no longer be part of the default gems starting from Ruby 3.5.0

[francois]

Just following instructions!

/Users/francois/.rvm/gems/ruby-3.3.5/gems/ruby_event_store-2.15.0/lib/ruby_event_store.rb:6: warning: /Users/francois/.rvm/rubies/ruby-3.3.5/lib/ruby/3.3.0/ostruct.rb was loaded from the standard library, but will no longer be part of the default gems starting from Ruby 3.5.0.
You can add ostruct to your Gemfile or gemspec to silence this warning.
Also please contact the author of ruby_event_store-2.15.0 to request adding ostruct into its gemspec.

OpenStruct is known to not be super performant. I have not investigated how/where it is used. Can OpenStruct be replaced, without going to an outside library?