fn methods_to_impl_fn(
ion: &TokenStream,
span: Span,
class: &Ident,
methods: &[Method],
static: bool,
) -> Result<(ImplItemFn, ImplItemFn)>fn methods_to_impl_fn(
ion: &TokenStream,
span: Span,
class: &Ident,
methods: &[Method],
static: bool,
) -> Result<(ImplItemFn, ImplItemFn)>