syntax_data: {"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if c.has_param() { c.super_fold_with(self) } else { c }
context_before:     fn fold_clauses(&mut self, c: I::Clauses) -> I::Clauses {
context_after:     }