flush
  
  Description:
  public Result flush (
bool flush)
  
 
  
    Start or stop the flushing action on this.
     When flushing, all current and future actions on this will return 
      EINTR until the connection is set to non-flushing mode again.
    Parameters:
    
      
        | this | 
        
           a Connection 
         | 
      
      
        | flush | 
        
           start or stop the flush 
         | 
      
    
    Returns: