syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// type and lifetime parameters (`[X, Y]` and `['a, 'b]` above).
context_before: /// The generic parameters don't include the erased `Self`, only trait
context_after: #[derive_where(Clone, Copy, Hash, PartialEq, Eq; I: Interner)]