syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"llvm_args:"}]}
source_snippet:     llvm_args: Vec<String> = (Vec::new(), parse_list, [TRACKED],
context_before:         "generate build artifacts that are compatible with linker-based LTO"),
context_after:         "a list of arguments to pass to LLVM (space separated)"),