syntax_data: {"ast_node_type":"function","tokens":[{"end":95,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn relate<R: TypeRelation<I>>(relation: &mut R, a: Self, b: Self) -> RelateResult<I, Self>;
context_before: pub trait Relate<I: Interner>: TypeFoldable<I> + PartialEq + Copy {
context_after: }