Substitute *element* for this placeholder element in the shapetree.
        This placeholder's `._element` attribute is set to |None| and its
        original element is free for garbage collection. Any attribute access
        (including a method call) on this placeholder after this call raises
        |AttributeError|.

def _replace_placeholder_with(self, element):
        """
        Substitute *element* for this placeholder element in the shapetree.
        This placeholder's `._element` attribute is set to |None| and its
        original element is free for garbage collection. Any attribute access
        (including a method call) on this placeholder after this call raises
        |AttributeError|.
        """
        element._nvXxPr.nvPr._insert_ph(self._element.ph)
        self._element.addprevious(element)
        self._element.getparent().remove(self._element)
        self._element = None