{"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"ty::FloatVar(_)"}]}
                        ty::FloatVar(_) => self.next_float_var(),
                        ty::IntVar(_) => self.next_int_var(),
                        ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_) => {