docs: def specification(cls, *context_specs):
  		""" Return linked context as adapter specification (is used by :class:`.WCommandContextAdapter`)
  
  		:param context_specs: context names
  		:return: WContext
  		"""
  		import_data = []
  		for name in context_specs:
  			import_data.append((name, None))
  		return cls.import_context(import_data)