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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 _encrypt_data_key( self, data_key: DataKey, algorithm: AlgorithmSuite, encryption_context: Dict[Text, Text] ) -> NoReturn: """Encrypt a data key and return the ciphertext. :param data_key: Unencrypted data key :type data_key: :class:`aws_encryption_sdk.structures.RawDataKey` or :class:`aws_encryption_sdk.structures.DataKey` :param algorithm: Algorithm object which directs how this Master Key will encrypt the data key :type algorithm: aws_encryption_sdk.identifiers.Algorithm :param dict encryption_context: Encryption context to use in encryption :raises NotImplementedError: when called """

        raise NotImplementedError("CountingMasterKey does not support encrypt_data_key")