Additional properties for collections

[ehennestad]

Add extra properties to a metadata collection, to clearly identify and describe it.

Example: In addition to nodes, the collection could have a name and a description property

[ehennestad]

There is something called a graph_name, but I do not get what it refers to from the documentation:
https://www.w3.org/TR/json-ld11/#terms-imported-from-other-specifications
https://www.w3.org/TR/rdf11-concepts/#dfn-graph-name