syntax_data: {"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// - Then we have a stack `A B D` where `D` has DFN 3
context_before:     /// - `A B C` and we add a cache for the result of C (DFN 2)
context_after:     /// - We try to solve D by evaluating E: `A B D E` (DFN 4)