getc()
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          (Not documented)
          
          
          
      def getc; raise ClosedStream;  end
           
          
         
        
       
    
      
        
        
        
          read(len = nil)
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          (Not documented)
          
          
          
      def read(len = nil); raise ClosedStream; end
           
          
         
        
       
    
      
        
        
        
          rewind()
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          (Not documented)
          
          
          
      def rewind; raise ClosedStream;  end