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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 aes_ecb_decrypt(self, key_handle, ciphertext):
 """ AES ECB decrypt using a key handle. @warning: Please be aware of the known limitations of AES ECB mode before using it! @param key_handle: Key handle to use for AES ECB decryption @param ciphertext: Data to decrypt @type key_handle: integer or string @type ciphertext: string @returns: Plaintext @rtype: string @see: L{pyhsm.aes_ecb_cmd.YHSM_Cmd_AES_ECB_Decrypt} """

        return pyhsm.aes_ecb_cmd.YHSM_Cmd_AES_ECB_Decrypt( \
            self.stick, key_handle, ciphertext).execute()