syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"DesugaringKind::Contract"}]}
source_snippet:             DesugaringKind::Contract => value == "Contract",
context_before:             DesugaringKind::BoundModifier => value == "BoundModifier",
context_after:             DesugaringKind::PatTyRange => value == "PatTyRange",