{"ast_node_type":"function","tokens":[{"end":77,"kind":"keyword","start":0,"text":"pub"}]}
    pub fn why_inactive(&self, opts: &CfgOptions) -> Option<InactiveReason> {
    /// Returns `None` when `self` is already true, or contains errors.
        let mut res = InactiveReason { enabled: Vec::new(), disabled: Vec::new() };