src/Tribe/Meta/Export.php

Method: Fix column value based on meta data.

Method: Retrieves the label value for the checkbox that is checked in the attendees list.

Filter Hook: Allow plugins to remove support for checkbox field values being displayed or override the text shown.

Method: Add orphaned column to the export based on what we have for the event attendees.

Method: Check if a column exists, by checking agains the object slug

Method: Add headers for our extra columns.

Method: Handle the actual population of attendee meta fields.

Method: Listen out for the generation of a filtered (exportable) attendee list: we don’t need to do anything unless that fires.

Method: If the current event has tickets that support attendee meta data, hook into the list to add the appropriate number of extra columns.

Method: Add orphaned columns to the export based on what we have for the event attendees.

DevDocs