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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 detectEncodingMeta(self):
 """Report the encoding declared by the meta element """

        buffer = self.rawStream.read(self.numBytesMeta)
        assert isinstance(buffer, bytes)
        parser = EncodingParser(buffer)
        self.rawStream.seek(0)
        encoding = parser.getEncoding()

        if encoding is not None and encoding.name in ("utf-16be", "utf-16le"):
            encoding = lookupEncoding("utf-8")

        return encoding