Class: anonymizer_final_element  - X-Ref

Implementation of backup_final_element that provides one interceptor for anonymization of data

This class overwrites the standard set_value() method, in order to get (by name)
functions from backup_anonymizer_helper executed, producing anonymization of information
to happen in a clean way

TODO: Finish phpdocs

Class: mnethosturl_final_element  - X-Ref

Implementation of backup_final_element that provides special handling of mnethosturl

This class overwrites the standard set_value() method, in order to decide,
based on various config options, what to do with the field.

TODO: Finish phpdocs

Class: file_nested_element  - X-Ref

Implementation of backup_nested_element that provides special handling of files

This class overwrites the standard fill_values() method, so it gets intercepted
for each file record being set to xml, in order to copy, at the same file, the
physical file from moodle file storage to backup file storage

TODO: Finish phpdocs

Class: backup_plugin_element  - X-Ref

Implementation of backup_optigroup_element to be used by plugins stuff.
Split just for better separation and future specialisation

Class: backup_subplugin_element  - X-Ref

Implementation of backup_optigroup_element to be used by subplugins stuff.
Split just for better separation and future specialisation