              if child in self._static_tabs:
                  continue
              logger.debug("removing child: %s", child)
              child_name = child.split(".")[-1]
              child_object = self.children[child_name]  # returns the OptionalDisplayPage object
              child_object.close()  # Call the OptionalDisplayPage close() method
              self.forget(child)
  
      def _update_displaybook(self, *args):  # pylint: disable=unused-argument
          """ Callback to be executed when the global tkinter variable `display`
 
</s> remove     """ Upscale block that uses the Keras Backend function resize_images to perform the upscaling
    Similar in methodolgy to the :class:`Upscale2xBlock`
 </s> add     """ Upscale block that uses the Keras Backend function resize_images to perform the up scaling
    Similar in methodology to the :class:`Upscale2xBlock` </s> remove         default initializer will be returned based on the configuration choices, otherwise
        the given initializer will be returned.
 </s> add         default initializer will be set to 'he_uniform'. If Convolutional Aware initialization
        has been enabled, then any passed through initializer will be replaced with the
        Convolutional Aware initializer. </s> remove     if initializer is None:
        retval = ConvolutionAware() if _CONFIG["conv_aware_init"] else he_uniform()
        logger.debug("Set default kernel_initializer: %s", retval)
 </s> add     if _CONFIG["conv_aware_init"]:
        retval = ConvolutionAware()
    elif initializer is None:
        retval = he_uniform()
            child_object = self.children.get(child_name)  # returns the OptionalDisplayPage object
            if not child_object:
                continue
              if child in self._static_tabs:
                  continue
              logger.debug("removing child: %s", child)
              child_name = child.split(".")[-1]
            child_object = self.children.get(child_name)  # returns the OptionalDisplayPage object
            if not child_object:
                continue
              child_object.close()  # Call the OptionalDisplayPage close() method
              self.forget(child)
  
      def _update_displaybook(self, *args):  # pylint: disable=unused-argument
          """ Callback to be executed when the global tkinter variable `display`
keep keep keep keep replace keep keep keep keep keep
 Fixups:
  - lib.gui.display - Catch error when trying to delete non-existant notebook tabs
  - lib.model.nn_blocks.ResidualBlock: Remove first LeakyReLU (explicit > implicit)
  - lib.model.nn_blocks._get_default_initializer - Always use ConvAware if selected
  - plugins.model.model - Add explicit leakyReLUs for ResBlocks 
lib/gui/display.py