public ChangeMerger(ConflictResolutionMethod conflictResolutionMethod, int inputBufferCapacity) {
this.conflictResolutionMethod = conflictResolutionMethod;
postbox0 = new DataPostbox<ChangeContainer>(inputBufferCapacity);
sortedChangeValidator0 = new SortedHistoryChangePipeValidator();
sortedChangeValidator0.setChangeSink(new DataPostboxChangeSink(postbox0));
postbox1 = new DataPostbox<ChangeContainer>(inputBufferCapacity);
sortedChangeValidator1 = new SortedHistoryChangePipeValidator();
sortedChangeValidator1.setChangeSink(new DataPostboxChangeSink(postbox1));
}