register

Description:

public static bool register (Plugin? plugin, string name, uint rank, Type type)

Create a new elementfactory capable of instantiating objects of the type and add the factory to plugin.

plugin	Plugin to register the element with, or `null` for a static element.
name	name of elements of this type
rank	rank of element (higher rank means more importance when autoplugging)
type	GType of element to register

true, if the registering succeeded, false on error