src/Decorator/Tags.php
public function value($key)
    {
        return (array_key_exists($key, $this->tags)) ? $this->tags[$key] : null;
    }
public function value($key)
    {
        return (array_key_exists($key, $this->tags)) ? $this->tags[$key] : null;
    }
public function value ( $ key ) { return ( array_key_exists ( $ key , $ this -> tags ) ) ? $ this -> tags [ $ key ] : null ; }
Get the value of the requested tag

@param string $key

@return string|null
Get the value of the requested tag