syntax_data: {"ast_node_type":"other","tokens":[{"end":13,"kind":"keyword","start":0,"text":"}"}]}
source_snippet:             }
context_before:                 rustc_type_ir::debug_bound_var(self, debruijn, bound_var)?
context_after:             ty::ConstKind::Placeholder(placeholder) => write!(self, "{placeholder:?}")?,