syntax_data: {"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// The more specific methods will often optimize their creation.
context_before:     /// Avoid using this in favour of more specific `new_*` methods, where possible.
context_after:     #[allow(rustc::usage_of_ty_tykind)]