docs: def write(self, data, echo=None):
          """
          Write data to channel.
  
          Args:
              data(bytes): The data to write to the channel.
              echo(bool): Whether to echo the written data to stdout.
  
          Raises:
              EOFError: If the channel was closed before all data was sent.
          """
  
          if echo or (echo is None and self.echo):
              sys.stdout.write(data.decode('latin1'))
              sys.stdout.flush()
          self.channel.write(data)