syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"(x86::Flavor::FastcallOrVectorcall,"}]}
source_snippet:                         (x86::Flavor::FastcallOrVectorcall, None)
context_before:                     ExternAbi::Fastcall { .. } | ExternAbi::Vectorcall { .. } => {
context_after:                     }