refactor EscrowCancel

include/xrpl/ledger/helpers/MPTokenHelpers.h

@@ -130,6 +130,14 @@ public:
     [[nodiscard]] bool
     requiresAuth() const override;
 
+    [[nodiscard]] TER
+    checkExists() const override
+    {
+        if (!exists())
+            return tecOBJECT_NOT_FOUND;
+        return tesSUCCESS;
+    }
+
     [[nodiscard]] bool
     hasHolder(AccountID const& holder) const override
     {

include/xrpl/ledger/helpers/RippleStateHelpers.h

@@ -132,6 +132,14 @@ public:
     [[nodiscard]] bool
     requiresAuth() const override;
 
+    [[nodiscard]] TER
+    checkExists() const override
+    {
+        if (!exists())
+            return tecNO_ISSUER;
+        return tesSUCCESS;
+    }
+
     [[nodiscard]] bool
     hasHolder(AccountID const& holder) const override
     {

include/xrpl/ledger/helpers/TokenHelpers.h

@@ -160,6 +160,9 @@ public:
     [[nodiscard]] virtual bool
     requiresAuth() const = 0;
 
+    [[nodiscard]] virtual TER
+    checkExists() const = 0;
+
     [[nodiscard]] virtual bool
     hasHolder(AccountID const& holder) const = 0;
 

include/xrpl/protocol/detail/features.macro

@@ -16,6 +16,7 @@
 // Add new amendments to the top of this list.
 // Keep it sorted in reverse chronological order.
 
+XRPL_FIX    (TypeSafetyRefactor,         Supported::no,  VoteBehavior::DefaultNo)
 XRPL_FIX   (PermissionedDomainInvariant, Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FIX    (ExpiredNFTokenOfferRemoval, Supported::yes, VoteBehavior::DefaultNo)
 XRPL_FIX    (BatchInnerSigs,             Supported::no, VoteBehavior::DefaultNo)