syntax_data: {"ast_node_type":"impl","tokens":[{"end":70,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// impl is not more restrictive than the parent impl. That is, if the
context_before: /// For the purposes of const traits, we also check that the specializing
context_after: /// `parent_impl_def_id` is a const impl (conditionally based off of some `[const]`