{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"self.write_immediate(Immediate::new_dyn_trait(old_data,"}]}
                self.write_immediate(Immediate::new_dyn_trait(old_data, new_vptr, self), dest)
                let new_vptr = self.get_vtable_ptr(ty, data_b)?;
            }