public function clean(string $allowedTags = null): Utility
    {
        $string = strip_tags(trim($this->string), $allowedTags);

        return new static($string, $this->encoding);
    }
public function clean(string $allowedTags = null): Utility
    {
        $string = strip_tags(trim($this->string), $allowedTags);

        return new static($string, $this->encoding);
    }
public function clean ( string $ allowedTags = null ) : Utility { $ string = strip_tags ( trim ( $ this -> string ) , $ allowedTags ) ; return new static ( $ string , $ this -> encoding ) ; }
Remove tags and trim the string

@param null|string $allowedTags [optional] Tags to keep when passing through strip_tags

@return $this
Remove tags and trim the string