question: private void updateInfoFlowSummaryMap ( MethodModel methodModel , Method method ) { Set < InfoKind > sourcesInfoKinds = method . getSourcesInfoKinds ( ) ; Set < InfoKind > sinkInfoKinds = method . getSinkInfoKinds ( ) ; if ( ! sourcesInfoKinds . isEmpty ( ) && ! sinkInfoKinds . isEmpty ( ) ) { for ( InfoKind sourceInfoKind : sourcesInfoKinds ) { String source = sourceInfoKind . toString ( ) ; Map < String , Set < MethodModel > > sinkMap = infoFlowSummaryMap . get ( source ) ; if ( sinkMap == null ) { sinkMap = new TreeMap < String , Set < MethodModel > > ( ) ; infoFlowSummaryMap . put ( source , sinkMap ) ; } for ( InfoKind sinkInfoKind : sinkInfoKinds ) { String sink = sinkInfoKind . toString ( ) ; Set < MethodModel > methodModels = sinkMap . get ( sink ) ; if ( methodModels == null ) { methodModels = new TreeSet < MethodModel > ( ) ; sinkMap . put ( sink , methodModels ) ; } methodModels . add ( methodModel ) ; } } } }
target:  Updates the info flow summary map if the given method is a sink method and there are info flows from some info sources into this sink method.