155                     article: "a",  in as_what()
162                     article: "an",  in as_what()
169                     article: "a",  in as_what()
176                     article: "type",  in as_what()
183                     article: "a",  in as_what()
190                     article: "a",  in as_what()
198                     write!(f, "{} ", clause.article())?;  in as_what()
213             article: &'a str,  in as_what()
218             article: &'a str,  in as_what()
225         fn article(&self) -> &'a str {  in as_what()  method
227                 Clause::Set { article, .. } | Clause::Ty1 { article, .. } => article,  in as_what()
234                     article: _,  in as_what()
248                     article: _,  in as_what()