def _stringify(self, transform: StringifyTransform) -> str:
    res = ['&']
    for a in self.attrs:
        res.append(transform(a))
    if ((len(self.attrs) > 0) and self.next.require_space_after_declSpecs()):
        res.append(' ')
    res.append(transform(self.next))
    return ''.join(res)
def _stringify(self, transform: StringifyTransform) -> str:
    res = ['&']
    for a in self.attrs:
        res.append(transform(a))
    if ((len(self.attrs) > 0) and self.next.require_space_after_declSpecs()):
        res.append(' ')
    res.append(transform(self.next))
    return .join(res)