Class: backup_anonymizer_helper  - X-Ref

Helper class for anonymization of data

This functions includes a collection of methods that are invoked
from the backup process when anonymization services have been
requested.

The name of each method must be "process_parentname_name", as defined
byt the @anonymizer_final_element final element class, where
parentname is the name ob the parent tag and name the name of the tag
contents to be anonymized (i.e. process_user_username) with one param
being the value to anonymize.

Note: current implementation of anonymization is pretty simple, just some
sequential values are used. If we want more elaborated generation, it
can be replaced later (using generators or wathever). Don't forget we must
ensure some fields (username, idnumber, email) are unique always.

TODO: Improve to use more advanced anonymization

TODO: Finish phpdocs