import into


    namespace File {
        
        typedef this = (
            Reader base,
            Writer base @v11,
            private
        ) @v10;
        
        () close(File* this) @v10;
        
    }
    ----
    
    namespace WriteText {
        
        () println(Writer* this, String* string);
        
    }
    ----
    
    import File
    import Writer
    import WriteText onto Writer