syntax_data: {"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// can be converted to `ReLateParam` by calling `tcx.liberate_late_bound_regions`.
context_before:     /// While inside of a function, e.g. during typeck, the late-bound function parameters
context_after:     ///