just add fixmes

src/DotNetLightning.Core/Utils/Primitives.fs

@@ -434,7 +434,8 @@ module Primitives =
         | SortedPlain = 0uy
         | ZLib = 1uy
 
-    [<StructAttribute>]
+    // FIXME: change to DU or record instead of adding [<Struct>]?
+    [<Struct>]
     type CommitmentNumber(index: UInt48) =
         member this.Index = index
 
@@ -493,7 +494,8 @@ module Primitives =
                     remotePaymentBasePoint
             ObscuredCommitmentNumber((UInt48.MaxValue - this.Index) ^^^ obscureFactor)
 
-    and [<StructAttribute>] ObscuredCommitmentNumber(obscuredIndex: UInt48) =
+    // FIXME: change to DU or record instead of adding [<Struct>]?
+    and [<Struct>] ObscuredCommitmentNumber(obscuredIndex: UInt48) =
         member this.ObscuredIndex: UInt48 = obscuredIndex
 
         override this.ToString() =
@@ -533,7 +535,8 @@ module Primitives =
                     remotePaymentBasePoint
             CommitmentNumber(UInt48.MaxValue - (this.ObscuredIndex ^^^ obscureFactor))
 
-    [<StructAttribute>]
+    // FIXME: change to DU or record instead of adding [<Struct>]?
+    [<Struct>]
     type RevocationKey(key: Key) =
         member this.Key = key
 
@@ -565,7 +568,8 @@ module Primitives =
         member this.CommitmentPubKey: CommitmentPubKey =
             CommitmentPubKey this.Key.PubKey
 
-    and [<StructAttribute>] CommitmentPubKey(pubKey: PubKey) =
+    // FIXME: change to DU or record instead of adding [<Struct>]?
+    and [<Struct>] CommitmentPubKey(pubKey: PubKey) =
         member this.PubKey = pubKey
 
         static member BytesLength: int = PubKey.BytesLength
@@ -576,8 +580,8 @@ module Primitives =
         member this.ToByteArray(): array<byte> =
             this.PubKey.ToBytes()
 
-
-    [<StructAttribute>]
+    // FIXME: change to DU or record instead of adding [<Struct>]?
+    [<Struct>]
     type CommitmentSeed(masterRevocationKey: RevocationKey) =
         new(key: Key) =
             CommitmentSeed(RevocationKey key)