#NEWLINE# def on_duplicate( self , ar , master ) : #NEWLINE# #INDENT# 'After duplicating we must change the :attr:`ref`.\n\n        ' #NEWLINE# if master . ref : #NEWLINE# #INDENT# self . ref += '(DUP)' #NEWLINE# #UNINDENT# super ( Referrable , self ) . on_duplicate ( ar , master )