Capability to get store metadata by shard CID.
Use to check for inclusion, or get shard size and origin
nb.link is optional to allow delegation of store/get
capability for any shard CID. If link is specified, then the
capability only allows a get for that specific CID.
When used as as an invocation, nb.link must be specified.
Capability to get store metadata by shard CID. Use to check for inclusion, or get shard size and origin
nb.linkis optional to allow delegation ofstore/getcapability for any shard CID. If link is specified, then the capability only allows a get for that specific CID.When used as as an invocation,
nb.linkmust be specified.