@@ -0,0 +1,9 @@
+package node
+
+import "github.com/filecoin-project/go-filecoin/proofs/sectorbuilder"
+
+// SectorBuilderSubmodule enhances the `Node` with sector storage capabilities.
+type SectorBuilderSubmodule struct {
+	// SectorBuilder is used by the miner to fill and seal sectors.
+	sectorBuilder sectorbuilder.SectorBuilder
+}
This should probably go with the storage protocol, though I'm not 100% sure about that.