data = b64decode(param).decode("ascii")
        except (ValueError, UnicodeDecodeError, binascii.Error):
            raise invalid_user_credentials_exc  # noqa: B904
        username, separator, password = data.partition(":")
        if not separator:
            raise invalid_user_credentials_exc
        return HTTPBasicCredentials(username=username, password=password)


class HTTPBearer(HTTPBase):
    """

def get_authorization_scheme_param(
    authorization_header_value: Optional[str],
) -> Tuple[str, str]:
    if not authorization_header_value:
        return "", ""
    scheme, _, param = authorization_header_value.partition(" ")

        missing_translation_content = get_missing_translation_content(config.docs_dir)
        header = ""
        body = markdown
        if markdown.startswith("#"):
            header, _, body = markdown.partition("\n\n")
        return f"{header}\n\n{missing_translation_content}\n\n{body}"