{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"token::CloseInvisible(InvisibleOrigin::MetaVar(_))"}]}
            token::CloseInvisible(InvisibleOrigin::MetaVar(_)) => {
            token::NtIdent(..) | token::NtLifetime(..) => self.prev_token.span,
                // `expr.span` is the interpolated span, because invisible open