Function translate_core::translate

pub fn translate<T, Q>(tr: T, text: String, _in: Langage, _out: Langage, end: Q) where
    T: Send + 'static + ETranslate,
    Q: Send + 'static + FnOnce(Option<String>), 

This function translate a text from the first langage to the second. Actually Google and Yandex as the ETranslate trait implemented You need to pass arguments: (,<text: String>,<srclang: Langage>,<outlang: Langage>,<The callback function which take an Option parameter)