Ref: https://github.com/comunica/comunica/blob/master/packages/actor-query-source-identify-rdfjs/lib/IRdfJsSourceExtended.ts cc: @rubensworks
Ref: https://github.com/comunica/comunica/blob/master/packages/actor-query-source-identify-rdfjs/lib/IRdfJsSourceExtended.ts
cc: @rubensworks