exposeObject
Add @object to the @builder object pool so it can be referenced just like any other object built by builder.
Only a single object may be added using @name. However, it is not an error to expose the same object under multiple names. gtk_builder_get_object()
may be used to determine if an object has already been added with @name.
Parameters
name
the name of the object exposed to the builder
object
the object to expose