     
     let precedingDataSources = dataSources.prefix(upTo: dataSources.index(of: source)!)
     let precedingSectionsCount = precedingDataSources.reduce(0) { totalSectionsCount, dataSource in
-        return totalSectionsCount + (dataSource != source ? dataSource.numberOfSections() : 0)
+      return totalSectionsCount + (dataSource != source ? dataSource.numberOfSections() : 0)
     }
     
     return IndexPath(row: relativeIndexPath.row, section: precedingSectionsCount + relativeIndexPath.section)

  
  public override func numberOfObjectsInSection(_ section: Int) -> Int {
    let flatSection = flatSections()[section]
    return flatSection.dataSource.numberOfObjectsInSection(flatSection.relativeSectionIndex)
  }
  
  public override func objectAtIndexPath(_ indexPath: IndexPath) -> ObjectType? {
    let flatSection = flatSections()[indexPath.section]
    return flatSection.dataSource.objectAtIndexPath(IndexPath(row: indexPath.row, section: flatSection.relativeSectionIndex))
  }
  

      }
      sectionsPassed += source.numberOfSections()
    }
    
    return result
  }
  
