Creates a GtkSourceTag.
Configure the tag using object arguments, i.e. using [method@GObject.Object.set].
For usual cases, [method@Buffer.create_source_tag] is more convenient to use.
tag name, or %NULL.
a new GtkSourceTag.
ConstructionException GTK+ fails to create the object.
See Implementation
Creates a GtkSourceTag.
Configure the tag using object arguments, i.e. using [method@GObject.Object.set].
For usual cases, [method@Buffer.create_source_tag] is more convenient to use.