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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def read_eof(self, echo=None):
 """ Read until the channel is closed. Args: echo(bool):
 Whether to write the read data to stdout. Returns: bytes: The read data. """


        d = b''
        while True:
            try:
                d += self.read(1, echo)
            except EOFError:
                return d