syntax_data: {"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// an item's where clauses, hence the name `Clause`, and may either be user-written
context_before: /// A subset of predicates which can be assumed by the trait solver. They show up in
context_after: /// (such as traits) or may be inserted during lowering.