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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 parse_buffer(self, s):
            '''input some data bytes, possibly returning a list of new messages'''
            m = self.parse_char(s)
            if m is None:
                return None
            ret = [m]
            while True:
                m = self.parse_char("")
                if m is None:
                    return ret
                ret.append(m)
            return ret