Phan\Language\UnionType::isEmpty PHP Method

    public function isEmpty() : bool
    {
        return $this->typeCount() < 1;
    }

 public function __toString() : string
 {
     $string = '';
     if (!$this->type->isEmpty()) {
         $string .= "{$this->type} ";
     }
     $string .= $this->name;
     return $string;
 }