<version>4.0.0+</version>
          <required>true</required>
          <identifier>true</identifier>
          <description>
            A unique identifier for a repository. This is used to match the repository
            to configuration in the {@code settings.xml} file, for example. Furthermore, the identifier is
            used during POM inheritance and profile injection to detect repositories that should be merged.

                * `name`: (`str`) **REQUIRED** (if a `license_info` is set). The
                    license name used for the API.
                * `identifier`: (`str`) An [SPDX](https://spdx.dev/) license expression
                    for the API. The `identifier` field is mutually exclusive of the `url`
                    field. Available since OpenAPI 3.1.0, FastAPI 0.99.0.