Maps a domain value to its RDF rendering: either a single Term or a whole Graph.
How each rendering is consumed is the caller's concern: property takes a Term as a direct triple
object and a Graph as a sub-resource linked at its own root. A mapper is otherwise a plain value-to-graph
function, free to mint its own blank-node anchors and never handed one by the caller.
Maps a domain value to its RDF rendering: either a single Term or a whole Graph.
How each rendering is consumed is the caller's concern: property takes a Term as a direct triple object and a Graph as a sub-resource linked at its own root. A mapper is otherwise a plain value-to-graph function, free to mint its own blank-node anchors and never handed one by the caller.