code: def trigger(self, *args, **kwargs):
      with io.BytesIO() as f:
          self.canvas.print_rgba(f)
          w, h = self.canvas.get_width_height()
          pb = GdkPixbuf.Pixbuf.new_from_data(
              f.getbuffer(),
              GdkPixbuf.Colorspace.RGB,
              True,
              8,
              w,
              h,
              w * 4,
          )
      clipboard = self.canvas.get_clipboard()
      clipboard.set(pb)
  
imports: import functools
  import io
  import os
  import matplotlib
  from matplotlib import _api, backend_tools, cbook
  from matplotlib.backend_bases import ToolContainerBase, KeyEvent, LocationEvent, MouseEvent, ResizeEvent, CloseEvent
  from gi.repository import Gio, GLib, Gtk, Gdk, GdkPixbuf
  from .None import _backend_gtk
  from ._backend_gtk import _BackendGTK, _FigureCanvasGTK, _FigureManagerGTK, _NavigationToolbar2GTK, TimerGTK
label_desc: Use image node_id 1 for calling the ToolCopyToClipboardGTK4 obj's underlying member method code with example usage: obj.trigger() without return types