syntax_data: {"ast_node_type":"other","tokens":[{"end":31,"kind":"keyword","start":0,"text":"root_depth:"}]}
source_snippet:     root_depth: AvailableDepth,
context_before: pub struct SearchGraph<D: Delegate<Cx = X>, X: Cx = <D as Delegate>::Cx> {
context_after:     /// The stack of goals currently being computed.