syntax_data: {"ast_node_type":"other","tokens":[{"end":36,"kind":"keyword","start":0,"text":"llvm_floatabi:"}]}
source_snippet:     llvm_floatabi: Option<FloatAbi>,
context_before:     llvm_abiname: Option<StaticCow<str>>,
context_after:     rustc_abi: Option<RustcAbi>,