class_docstr: Link Widget
  
  source: a (Widget, 'trait_name') tuple for the source trait
  target: a (Widget, 'trait_name') tuple that should be updated
class_docstr_tok: ["Link","Widget","source",":","a","(","Widget",",","'trait_name","'",")","tuple","for","the","source","trait","target",":","a","(","Widget",",","'trait_name","'",")","tuple","that","should","be","updated"]
code: def unlink(self):
      self.close()
  
file_path: catboost/contrib/python/ipywidgets/py3/ipywidgets/widgets/widget_link.py
imports: from .widget import Widget, register, widget_serialization
  from .widget_core import CoreWidget
  from traitlets import Unicode, Tuple, Instance, TraitError
label_desc: Use image node_id 2 for calling the Link obj's underlying member method code with example usage: obj.unlink() without return types