endIrreversibleAction
Denotes the end of an action that may not be undone.
This will cause any previous operations in the undo/redo queue to be cleared.
This should be called after completing modifications to the text buffer after method@Gtk.TextBuffer.begin_irreversible_action was called.
You may nest calls to gtk_text_buffer_begin_irreversible_action() and gtk_text_buffer_end_irreversible_action() pairs.