Kotlin code generated for deprecated protocol buffer elements should be marked as deprecated #121
Description
It is possible to mark most protocol buffer elements as deprecated using the deprected option, for example, a message can be deprecated like this:
message Request {
option deprecated = true;
string requestContent = 1;
}
When Java code is generated for deprecated elements, they are annotated with @java.lang.Deprecated. I believe that the @kotlin.Deprecated annotation should be applied to deprecated elements in generated Kotlin code.