Macro generate_responses_functions 

macro_rules! generate_responses_functions {
    (
        $doc_family:expr,
        $enum_name:ident,
        $first_variant:ident => ($std_code_first:expr, $std_name_first:expr, $desc_first:expr, $int_code_first:expr, $int_std_name_first:expr)
        $(, $variant:ident => ($std_code:expr, $std_name:expr, $desc:expr, $int_code:expr, $int_name:expr) )* $(,)?
    ) => { ... };
}