{"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"Ty::new_float_var(self.tcx,"}]}
        Ty::new_float_var(self.tcx, next_float_var_id)
            self.inner.borrow_mut().float_unification_table().new_key(ty::FloatVarValue::Unknown);
    }