syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // could have different bound vars *anyways*.
context_before:                 // because of HRTBs (only in the `Self` type). Also, auto traits
context_after:                 match predicate.as_ref().skip_binder() {