syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"verbose_asm:"}]}
source_snippet:     verbose_asm: bool = (false, parse_bool, [TRACKED],
context_before:         "validate MIR after each transformation"),
context_after:         "add descriptive comments from LLVM to the assembly (may change behavior) (default: no)"),