def findreplaceables(Class, parent, set=None,**kwargs):
        """Internal method to find replaceable elements. Auxiliary function used by :meth:`AbstractElement.replace`. Can be overriden for more fine-grained control."""
        return list(parent.select(Class,set,False))
Internal method to find replaceable elements. Auxiliary function used by :meth:`AbstractElement.replace`. Can be overriden for more fine-grained control.