You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: lib.rs
    path of file: ./repos/tikv/components/into_other/src
    
    the code of the file until where you have to start completion: // Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.

// Various conversions between types that can't have their own
// interdependencies. These are used to convert between error_traits::Error and
// other Error's that error_traits can't depend on.

use engine_traits::Error a
    
    fn into_other(self) -> ProtoError {
        let mut errorpb = ProtoError::default();
        errorpb.set_message(format!("{}", self));

        if let EngineTraitsError::NotInRange {
            key,
            region_id,
            start,
            end,
        } = self
        {
            errorpb.mut_key_not_in_region().set_key(key);
            errorpb.mut_key_not_in_region().set_region_id(region_id);
            errorpb.mut_key_not_in_region().set_start_key(start);
            errorpb.mut_key_not_in_region().set_end_key(end);
        }

        errorpb
    }