pub fn configure() -> Self {
        Builder {
            file_descriptor_sets: Vec::new(),
            encoded_file_descriptor_sets: Vec::new(),
            include_reflection_service: true,

            service_names: Vec::new(),
            use_all_service_names: true,
        }
    }
Create a new builder that can configure a gRPC Reflection Service.
tonic-reflection/src/server/mod.rs