syntax_data: {"ast_node_type":"variable","tokens":[{"end":83,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let args = &self.args[p.tcx().generics_of(self.def_id).parent_count - 1..];
context_before:         // generics do as the trait always has a self ty param. We need to offset.
context_after:         p.path_generic_args(|p| write!(p, "{name}"), args)?;