BuilderScope 
    GtkBuilderScope is an interface to provide language binding support to GtkBuilder.
The goal of GtkBuilderScope is to look up programming-language-specific values for strings that are given in a GtkBuilder UI file.
The primary intended audience is bindings that want to provide deeper integration of GtkBuilder into the language.
A GtkBuilderScope instance may be used with multiple GtkBuilder objects, even at once.
By default, GTK will use its own implementation of GtkBuilderScope for the C language which can be created via ctor@Gtk.BuilderCScope.new.
If you implement GtkBuilderScope for a language binding, you may want to (partially) derive from or fall back to a class@Gtk.BuilderCScope, as that class implements support for automatic lookups from C symbols.
Inheritors
Types
The BuilderScopeImpl type represents a native instance of the BuilderScope interface.