{"ast_node_type":"function","tokens":[{"end":62,"kind":"keyword","start":0,"text":"fn"}]}
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
impl<V: CodegenObject> fmt::Debug for OperandRef<'_, V> {
        write!(f, "OperandRef({:?} @ {:?})", self.val, self.layout)