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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:
 async def read(self, *, decode: bool=False) -> Any: """Reads body part data. decode: Decodes data following by encoding method from Content-Encoding header. If it missed data remains untouched """

        if self._at_eof:
            return b''
        data = bytearray()
        while not self._at_eof:
            data.extend((await self.read_chunk(self.chunk_size)))
        if decode:
            return self.decode(data)
        return data