code: def postinit(
          self,
          args,
          defaults,
          kwonlyargs,
          kw_defaults,
          annotations,
          kwonlyargs_annotations=None,
          varargannotation=None,
          kwargannotation=None,
      ):
          
          self.args = args
          self.defaults = defaults
          self.kwonlyargs = kwonlyargs
          self.kw_defaults = kw_defaults
          self.annotations = annotations
          self.kwonlyargs_annotations = kwonlyargs_annotations
          self.varargannotation = varargannotation
          self.kwargannotation = kwargannotation
docs: Do some setup after initialisation.
  
          :param args: The names of the required arguments.
          :type args: list(AssignName)
  
          :param defaults: The default values for arguments that can be passed
              positionally.
          :type defaults: list(NodeNG)
  
          :param kwonlyargs: The keyword arguments that cannot be passed
              positionally.
          :type kwonlyargs: list(AssignName)
  
          :param kw_defaults: The default values for keyword arguments that
              cannot be passed positionally.
          :type kw_defaults: list(NodeNG)
  
          :param annotations: The type annotations of arguments that can be
              passed positionally.
          :type annotations: list(NodeNG)
  
          :param kwonlyargs_annotations: The type annotations of arguments that
              cannot be passed positionally. This should always be passed in
              Python 3.
          :type kwonlyargs_annotations: list(NodeNG)
  
          :param varargannotation: The type annotation for the variable length
              arguments.
          :type varargannotation: NodeNG
  
          :param kwargannotation: The type annotation for the variable length
              keyword arguments.
          :type kwargannotation: NodeNG