syntax_data: {"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"(ExternAbi::RustCold,"}]}
source_snippet:             (ExternAbi::RustCold, _) => CanonAbi::RustCold,
context_before:             (ExternAbi::RustCold, _) if self.os == OsKind::Windows => CanonAbi::Rust,