Support for example phone number in invalid message in serializer PhoneNumberField

[hfroot]

Hi there, we're using phonenumber_field.serializerfields.PhoneNumberField to validate a user-entered phone number. At the moment, when it is invalid, by default the message just says that it is invalid, instead of providing an example of a valid number.

From what I understand, SplitPhoneNumberField has that functionality by default.

Is there any reason not to extend the same behaviour to the serializer field? I'd be happy to give it a go.