question: public SymGraph ( Motif motif ) { this . motif = motif ; colorsToRecheck = new HashSet < Integer > ( ) ; topMotifnodeToColor = new int [ motif . getNrMotifNodes ( ) ] ; colorToBottomMotifnode = new HashMap < Integer , List < Integer > > ( ) ; colorToTopMotifnode = new HashMap < Integer , List < Integer > > ( ) ; ArrayList < Integer > list1 = new ArrayList < Integer > ( ) ; ArrayList < Integer > list2 = new ArrayList < Integer > ( ) ; for ( int i = 0 ; i < topMotifnodeToColor . length ; i ++ ) { list1 . add ( i ) ; list2 . add ( i ) ; } colorToBottomMotifnode . put ( 0 , list2 ) ; colorToTopMotifnode . put ( 0 , list1 ) ; }
target:  Create an initial OPP