def _validate_writable(self):
if not self.is_writable:
raise exception.BankReadonlyViolation()
def get_sub_section(self, prefix, is_writable=True):
if is_writable and not self._is_writable:
raise exception.BankReadonlyViolation()
return BankSection(self._bank, self._prefix + '/' + prefix,
self._is_writable)