pub fn generate_field_name(member_name: &str) -> String {
    let name = member_name.to_snake_case();
    if name == "return" || name == "type" {
        name + "_"
    } else {
        name
    }
}
Translate a botocore field name to something rust-idiomatic and
escape reserved words with an underscore
service_crategen/src/commands/generate/codegen/mod.rs