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+# This directory contains SPDX-related files used for testing
+
+- `spdx-schema-v2.3.1.json` is the SPDX 2.3.1 JSON schema file from the [spdx-spec upstream](https://github.com/spdx/spdx-spec/blob/62f3e7cbd448a19f0099fdbd707d8b9b4fbddfdd/schemas/spdx-schema.json)