def _fetchAllChildren(self):
        """ Fetches children items.

            If this is stand-alone Panel the index, column etc are added as PandasIndexRti obj.
        """
        assert self.isSliceable, "No underlying pandas object: self._ndFrame is None"

        childItems = []

        for subName in self._ndFrame.items:
            childItem = PandasDataFrameRti(self._ndFrame[subName], nodeName=subName,
                                           fileName=self.fileName, iconColor=self._iconColor,
                                           standAlone=False)
            childItems.append(childItem)

        if self._standAlone:
            childItems.append(self._createIndexRti(self._ndFrame.items, 'items'))
            childItems.append(self._createIndexRti(self._ndFrame.major_axis, 'major_axis'))
            childItems.append(self._createIndexRti(self._ndFrame.minor_axis, 'minor_axis'))

        return childItems
Fetches children items.

            If this is stand-alone Panel the index, column etc are added as PandasIndexRti obj.