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Some optional suites will feature their own ontologies, which will describe the RDF that they make available to transact across LDP as extensions to the upper ontology. Some optional suites may also define an accompanying Java SPI that will define types and semantics for a pluggable implementation of that suite's functionality. For example, the Identifier Minting API will be accompanied by an SPI that includes the type PidMinter and its meaning.
An obvious pair of questions: should any of these APIs be folded into the baseline? Are there others not yet listed here?
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