pub(super) fn s7_trait_member_access(
type_ident: &Ident,
trait_name: &Ident,
member: &str,
) -> StringExpand description
How R code reaches an S7 trait static or const: attr(Type, "Trait")$member,
also the topic alias of its documentation block. The trait namespace is an
attribute of the class object, and Type$Trait$member does not reach it:
an S7 class object is a function, and S7’s $ method stops on any S7
object that is not a list or an environment (“Can’t get S7 properties with
$”).