syntax_data: {"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"ty::GenericArgKind::Type(t)"}]}
source_snippet:             ty::GenericArgKind::Type(t) => t.abi_hash(tcx, hasher),
context_before:         match self {
context_after:             ty::GenericArgKind::Lifetime(_) | ty::GenericArgKind::Const(_) => unimplemented!(),