How to use the canopen.objectdictionary.__init__.ObjectDictionaryError function in canopen

def decode_desc(self, value):
        if not self.value_descriptions:
            raise ObjectDictionaryError("No value descriptions exist")
        elif value not in self.value_descriptions:
            raise ObjectDictionaryError(
                "No value description exists for %d" % value)
        else:
            return self.value_descriptions[value]

value = int(value)
            if self.data_type in NUMBER_TYPES:
                if self.min is not None and value < self.min:
                    logger.warning(
                        "Value %d is less than min value %d", value, self.min)
                if self.max is not None and value > self.max:
                    logger.warning(
                        "Value %d is greater than max value %d",
                        value,
                        self.max)
            try:
                return self.STRUCT_TYPES[self.data_type].pack(value)
            except struct.error:
                raise ValueError("Value does not fit in specified type")
        elif self.data_type is None:
            raise ObjectDictionaryError("Data type has not been specified")
        else:
            raise TypeError(
                "Do not know how to encode %r to data type %Xh" % (
                    value, self.data_type))

def decode_desc(self, value):
        if not self.value_descriptions:
            raise ObjectDictionaryError("No value descriptions exist")
        elif value not in self.value_descriptions:
            raise ObjectDictionaryError(
                "No value description exists for %d" % value)
        else:
            return self.value_descriptions[value]

def decode_raw(self, data):
        if self.data_type == VISIBLE_STRING:
            return data.rstrip(b"\x00").decode("ascii", errors="ignore")
        elif self.data_type == UNICODE_STRING:
            # Is this correct?
            return data.rstrip(b"\x00").decode("utf_16_le", errors="ignore")
        elif self.data_type in self.STRUCT_TYPES:
            try:
                value, = self.STRUCT_TYPES[self.data_type].unpack(data)
                return value
            except struct.error:
                raise ObjectDictionaryError(
                    "Mismatch between expected and actual data size")
        else:
            # Just return the data as is
            return data

def encode_desc(self, desc):
        if not self.value_descriptions:
            raise ObjectDictionaryError("No value descriptions exist")
        else:
            for value, description in self.value_descriptions.items():
                if description == desc:
                    return value
        valid_values = ", ".join(self.value_descriptions.values())
        error_text = "No value corresponds to '%s'. Valid values are: %s"
        raise ValueError(error_text % (desc, valid_values))