syntax_data: {"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// * `x > 0` is encoded as `x - 1` in base 62, followed by `"_"`,
context_before: /// * `x = 0` is encoded as just the `"_"` terminator
context_after: ///   e.g. `1` becomes `"0_"`, `62` becomes `"Z_"`, etc.