syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"\"insert"}]}
source_snippet:         "insert function instrument code for mcount-based tracing (default: no)"),
context_before:     instrument_mcount: bool = (false, parse_bool, [TRACKED],
context_after:     instrument_xray: Option<InstrumentXRay> = (None, parse_instrument_xray, [TRACKED],