syntax_data: {"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"llvm_module_flag:"}]}
source_snippet:     llvm_module_flag: Vec<(String, u32, String)> = (Vec::new(), parse_llvm_module_flag, [TRACKED],
context_before:         "lint MIR before and after each transformation"),
context_after:         "a list of module flags to pass to LLVM (space separated)"),