question: private void preprocessData ( Map < Integer , Map < Integer , List < Integer > > > knotenVonSpurNachSpurMapping , Map < Integer , Map < Integer , String > > knotenSpurLinkMapping ) { preprocessKnotenSpurLinkMapping ( knotenSpurLinkMapping ) ; cleanKnotenVonSpurNachSpurMapping ( knotenVonSpurNachSpurMapping , knotenSpurLinkMapping ) ; mergeLanesOnSameLink ( knotenVonSpurNachSpurMapping , knotenSpurLinkMapping ) ; }
target:  Calls several preprocessing procedures, the order of the calls is important!