question: private int max ( Map < Integer , ModifiableDBIDs > candidates ) { DBIDs maxSet = null ; Integer maxDim = null ; for ( Integer nextDim : candidates . keySet ( ) ) { DBIDs nextSet = candidates . get ( nextDim ) ; if ( maxSet == null || maxSet . size ( ) < nextSet . size ( ) ) { maxSet = nextSet ; maxDim = nextDim ; } } return maxDim ; }
target:  Returns the set with the maximum size contained in the specified map.