syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"linker:"}]}
source_snippet:             linker: Some("aarch64-kmc-elf-gcc".into()),
context_before:         options: TargetOptions {
context_after:             features: "+v8a,+neon,+fp-armv8".into(),