netmap: expose Candidate structure to RPC bindings

contracts/netmap/config.yml

@@ -1,5 +1,5 @@
 name: "NeoFS Netmap"
-safemethods: ["innerRingList", "epoch", "netmap", "netmapCandidates", "snapshot", "snapshotByEpoch", "config", "listConfig", "version", "listNodes", "listCandidates", "cleanupThreshold"]
+safemethods: ["innerRingList", "epoch", "netmap", "netmapCandidates", "snapshot", "snapshotByEpoch", "config", "listConfig", "version", "listNodes", "listCandidates", "cleanupThreshold", "unusedCandidate"]
 permissions:
   - methods: ["update", "newEpoch"]
 events:

contracts/netmap/contract.go

@@ -775,6 +775,13 @@ func CleanupThreshold() int {
 	return storage.Get(storage.GetReadOnlyContext(), []byte(cleanupThresholdKey)).(int)
 }
 
+// UnusedCandidate does nothing except marking Candidate structure as used one
+// thereby making RPC binding generator produce code for it. It is a temporary
+// solution until we have proper iterator types. Never use it.
+func UnusedCandidate() Candidate {
+	return Candidate{}
+}
+
 // serializes and stores the given Node by its public key in the contract storage,
 // and throws AddPeerSuccess notification after this.
 //

contracts/netmap/manifest.json

@@ -1 +1 @@
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