{% if api.required_parts.1 %}
        for param in ({{ api.required_parts|join(", ")}}):
            if param in SKIP_IN_PATH:
                raise ValueError("Empty value passed for a required argument.")

    {% elif api.required_parts %}
        if {{ api.required_parts.0 }} in SKIP_IN_PATH:
            raise ValueError("Empty value passed for a required argument '{{ api.required_parts.0 }}'.")

    {% endif %}