Method: Get a count of the number of invitations that match provided filter parameters.

Method: Delete an invitation by id.

Method: This is where custom actions are added (in child classes) to determine whether a request should be allowed.

Method: Delete all invitations by class.

Method: This is where custom actions are added (in child classes) to determine whether an invitation should be allowed.

Method: Delete a request or requests by query data.

Method: Mark invitations as sent that are found by user_id, inviter_id, invitee_email, class name, item id, and optional secondary item id.

Method: Delete an invitation or invitations by query data.

Method: This is where custom actions are added (in child classes) to run when an invitation or request is accepted.

Method: Mark invitation as accepted by invitation ID.