create_configure_widget

Creates the configure widget for the plugin.

The returned widget should allow configuring all the relevant aspects of the plugin, and should allow instant-apply, as promoted by the Gnome Human Interface Guidelines.

[class@PluginManager] will embed the returned widget into a dialog box, but you shouldn't take this behaviour for granted as other implementations of a plugin manager UI might do otherwise.

This method should always return a valid [class@Gtk.Widget] instance, never null.

Parameters:

this	A Configurable

Returns:

A Widget used for configuration.