{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"///"}]}
    /// Converts a `ConstArg` in an unambiguous position to one in an ambiguous position. This is
impl<'hir> ConstArg<'hir> {
    /// fallible as the [`ConstArgKind::Infer`] variant is not present in ambiguous positions.