Gets the email from email.
Checks whether a user has been previously invited to a form.
Sets a user as invited to a form.
Returns the available meta fields for the submodule.
Returns the available settings sections for the submodule.
Returns the available settings fields for the submodule.
Registers all assets the submodule provides.
Enqueues scripts and stylesheets on the form editing screen.
Class for an access control to restrict to members only.
Bootstraps the submodule by setting properties.