syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"#[derive(Clone,"}]}
source_snippet: #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug)]
context_before: // such that `unify(a, b)` is the "smaller" of `a` and `b`.
context_after: enum Class {