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+This package provides Alibaba Cloud API metadata as PHP array files,
+generated from the original JSON metadata.
+
+The PHP array files are pre-generated from the `acs-metadata-build`
+repository, and the artifacts are hosted on Cloudflare R2. To update
+metadata, set the bucket name in the `R2_BUCKET` environment variable and
+specify the release tag with `TAG`, then run the Makefile target:
+
+    R2_BUCKET=<your-bucket-name> TAG=<version> make deploy