syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:             if index < generics.parent_count {
context_before:         self.tcx.mk_args_from_iter(args.iter().enumerate().map(|(index, kind)| {
context_after:                 // Accommodate missing regions in the parent kinds...