syntax_data: {"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"ty::ConstKind::Param(p)"}]}
source_snippet:             ty::ConstKind::Param(p) => Some(p.index),
context_before:         ty::GenericArgKind::Const(ct) => match ct.kind() {
context_after:             _ => None,