syntax_data: {"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"\"insert"}]}
source_snippet:         "insert function instrument code for XRay-based tracing (default: no)
context_before:     instrument_xray: Option<InstrumentXRay> = (None, parse_instrument_xray, [TRACKED],
context_after:          Optional extra settings: