A link to both DomainSet and RangeType is always present in /collections/{collectionId} resource links
That link may point to a separate resource
(e.g. /collections/{collectionId}/coverage/domainset or /collections/{collectionId}/coverage/rangetype)
That link may also point to a specific property of the collection resource itself
e.g. /collections/{collectionId}#DomainSet or /collections/{collectionId}#RangeType
Updated to the latest relation types from the code sprint, following OGC NA guidance that URIs should be URLs (possibly still under discussion)
…ated to reflect decision for #64