It contains two modules, Computer Metadata Snapshot and Computer Trusted Metadata.
Computer Metadata Snapshot's purpose is to store serialized (JSON) documents generated by https://lab.nexedi.com/nexedi/metadata-collect-agent
Computer Trusted Metadata's purpose is to store serialized (JSON) documents generated by https://lab.nexedi.com/nexedi/software-metadata-crawlers
It also contains a test that can ensure the Contribution Predictate for .metadata files is working correctly. The intended behavior is that all files that end with the .metadata extension end up within the Computer Metadata Snapshot module.