// A resource id uniquely identifies a
// resource in the storage provider namespace.
// A ResourceId MUST be unique in the storage provider.
type ResourceId struct {
	// REQUIRED.
	// The logical id of a storage. Used by the storage
	// registry to determine the responsible storage provider.
	StorageId string `protobuf:"bytes,1,opt,name=storage_id,json=storageId,proto3" json:"storage_id,omitempty"`
	// REQUIRED.
	// The internal id used by service implementor to
	// uniquely identity the resource in the internal
	// implementation of the service.
	OpaqueId string `protobuf:"bytes,2,opt,name=opaque_id,json=opaqueId,proto3" json:"opaque_id,omitempty"`
	// OPTIONAL.
	// The internal id used by service implementor to
	// uniquely identify the storage space.
	// Used by the storageprovider to locate the correct storage space.
	SpaceId              string   `protobuf:"bytes,3,opt,name=space_id,json=spaceId,proto3" json:"space_id,omitempty"`
	XXX_NoUnkeyedLiteral struct{} `json:"-"`
	XXX_unrecognized     []byte   `json:"-"`
	XXX_sizecache        int32    `json:"-"`
}

provider.ResourceId{
                        StorageId: "provider-1",
			SpaceId:  "f7fbf8c8-139b-4376-b307-cf0a8c2d0d9c",
			OpaqueId: "f7fbf8c8-139b-4376-b307-cf0a8c2d0d9c",
		}