syntax_data: {"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"\"vec-default\""}]}
source_snippet:             "vec-default" => Err("v20-v31 are reserved on vec-default ABI"),
context_before:         match &*target.options.abi {
context_after:             "vec-extabi" => Ok(()),