public function tag(string $tag): array
    {
        return $this->hasTag($tag) ? $this->tags[$tag] : null;
    }
public function tag(string $tag): array
    {
        return $this->hasTag($tag) ? $this->tags[$tag] : null;
    }
public function tag ( string $ tag ) : array { return $ this -> hasTag ( $ tag ) ? $ this -> tags [ $ tag ] : null ; }
The value of a tag.

@param string $tag

@return array
The value of a tag .