syntax_data: {"ast_node_type":"other","tokens":[{"end":29,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// beginning with `no-`.
context_before:     /// This style of option is deprecated, and is mainly used by old options
context_after:     pub(crate) fn parse_no_value(slot: &mut bool, v: Option<&str>) -> bool {