code: def on_pick_button_pressed(cls, ev):
          
          cls.hide_errors()
  
          selected_code = cls._pick_selected_option()
          if not selected_code:
              cls.select_el.style.border = "2px solid red"
              return
  
          cls.selected_code = selected_code
          cls.code = str(selected_code)
          cls.original_author_el.value = cls.code_to_data[selected_code].get(
              "alt_name",
              str(cls.code_to_data[selected_code])
          )
          cls.hide()
docs: Callback called when the user press the button for accepting the picked
          author.
  
          This element calls validations, before accepting the choice.