Document the wildcard for selecting fields in the ::get() action
I asked 'Is there a shortcut to ask the API4 to select all custom data for an entity?' here.
@colemanw said yes ->addSelect('custom.*')
. If you want to select all core AND custom fields, do ->addSelect('*', 'custom.*')
.
It would be good to document this.
https://docs.civicrm.org/dev/en/latest/api/v4/actions/#get is maybe the best place to do so. Those header feel like stubs at the minute and would be a good place to collect shortcuts and techniques for working with the various actions.