Method option

plugins/src/lib.rs:122–125

(mut self, opt: options::ConfigOption)

    }

    pub fn option(mut self, opt: options::ConfigOption) -> Builder<S, I, O> {
        self.options.push(opt);
        self
    }

    /// Subscribe to notifications for the given `topic`. The handler
    /// is an async function that takes a `Plugin<S>` and the