#NEWLINE# def compute( self ) : #NEWLINE# #INDENT# try : #NEWLINE# #INDENT# ent1 = ent2 . _arguments [ 0 ] #NEWLINE# ent2 = self . _arguments [ 1 ] #NEWLINE# self . _features . copyUpdate ( ent1 . _features ) #NEWLINE# self . _features . difference ( ent2 . _features ) #NEWLINE# #UNINDENT# except Exception as e : #NEWLINE# #INDENT# logger . error ( e . message ) #NEWLINE# logger . error ( 'failed to compute the difference relation' )