syntax_data: {"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"\"generate"}]}
source_snippet:         "generate JSON tracing data file from LLVM data (default: no)"),
context_before:     llvm_time_trace: bool = (false, parse_bool, [UNTRACKED],
context_after:     location_detail: LocationDetail = (LocationDetail::all(), parse_location_detail, [TRACKED],