     }
 }
 
-// scan
+// MARK: scan
 extension DriverConvertibleType {
     /**
     Applies an accumulator function over an observable sequence and returns each intermediate result. The specified seed value is used as the initial accumulator value.

    }
}

extension CollectionType where Generator.Element : DriverConvertibleType {

    /**

import RxSwift
#endif

// MARK: map
extension DriverConvertibleType {
    
    /**
