RHGitaly ListRefs
The ListRefs
gRPC method has become one of the most frequently called since it gained filtering options and therefore is no longer meant to only list all the refs.
We have all the necessary tools to implement it in Rust, but it will a longer endeavour, precisely because of the many options (sorting etc). It is not really needed for HGitaly3, but it will help freeing resources for mutator requests in HGitaly that cannot be implemented in Rust.