syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"BackendRepr::ScalarPair(a,"}]}
source_snippet:             BackendRepr::ScalarPair(a, b) => PassMode::Pair(
context_before:             }
context_after:                 scalar_attrs(&layout, a, Size::ZERO),