def _forget_annot(self, annot):
        """Remove an annot from reference dictionary."""
        aid = id(annot)
        if aid in self._annot_refs:
            self._annot_refs[aid] = None
def _forget_annot ( self , annot ) : aid = id ( annot ) if aid in self . _annot_refs : self . _annot_refs [ aid ] = None
Remove an annot from reference dictionary.