syntax_data: {"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"retpoline:"}]}
source_snippet:     retpoline: bool = (false, parse_bool, [TRACKED TARGET_MODIFIER],
context_before: written to standard error output)"),
context_after:         "enables retpoline-indirect-branches and retpoline-indirect-calls target features (default: no)"),