def METHOD_NAME(self) -> "Credentials":
    """
    :class:`telegram.Credentials`: Lazily decrypt and return credentials that were used
        to decrypt the data. This object also contains the user specified payload as
        `decrypted_data.payload`.
    Raises:
        telegram.error.PassportDecryptionError: Decryption failed. Usually due to bad
            private/public key but can also suggest malformed/tampered data.
    """
    return self.credentials.decrypted_data