public function get($key) {
        $key = $this->formatKey($key);
        return array_get($this->headers, $key, []);
    }
public function get($key) {
        $key = $this->formatKey($key);
        return array_get($this->headers, $key, []);
    }
public function get ( $ key ) { $ key = $ this -> formatKey ( $ key ) ; return array_get ( $ this -> headers , $ key , [ ] ) ; }
Get all headers by key.

@param $key

@return array
Get all headers by key .