class_docstr: A `Callback` to handle the display of progress bars
class_docstr_tok: ["A","`","Callback","`","to","handle","the","display","of","progress","bars"]
code: def after_validate(self):
      self.pbar.on_iter_end()
  
imports: from __future__ import annotations
  from ..basics import *
label_desc: Use image node_id 6 for calling the ProgressCallback obj's underlying member method code with example usage: obj.after_validate() without return types