syntax_data: {"ast_node_type":"other","tokens":[{"end":35,"kind":"keyword","start":0,"text":"\"vec-extabi\""}]}
source_snippet:             "vec-extabi" => Ok(()),
context_before:             "vec-default" => Err("v20-v31 are reserved on vec-default ABI"),
context_after:             _ => unreachable!("unrecognized AIX ABI"),