code: def validate(self):
      text = self.edit.text()
      if hasattr(text, "strip"):
          text = text.strip()
      else:
          text = text.trimmed()
      if text:
          self.accept()
  
imports: import re
  from PyQt5 import QtCore
  from PyQt5 import QtGui
  from PyQt5 import QtWidgets
  from PyQt5.Qt import QT_VERSION_STR
  from libs.utils import newIcon, labelValidator
label_desc: Use image node_id 4 for calling the KeyDialog obj's underlying member method code with example usage: obj.validate() without return types