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Similarly to the previous APIs, we add the optional portalId parameter to the get association API. If omitted will fetch the DOI association for the synapse.org portal.
Note: The GET /doi and /doi/association only allow to fetch a single DOI/Associations for an entity in the context of a portal or synapse.org, we might need a new set of API to fetch all the minted DOIs/Associations given just an entity since the current API is not compatible with a list of DOI/Associations. It is not clear if the portal DOIs should be shown on synapse.org.