effects: add accessors for EffectsV2

crates/sui-types/src/effects/effects_v2.rs

@@ -41,7 +41,7 @@ pub struct TransactionEffectsV2 {
     dependencies: Vec<TransactionDigest>,
 
     /// The version number of all the written Move objects by this transaction.
-    lamport_version: SequenceNumber,
+    pub(crate) lamport_version: SequenceNumber,
     /// Objects whose state are changed in the object store.
     changed_objects: Vec<(ObjectID, EffectsObjectChange)>,
     /// Shared objects that are not mutated in this transaction. Unlike owned objects,
@@ -556,6 +556,10 @@ impl TransactionEffectsV2 {
             );
         }
     }
+
+    pub fn changed_objects(&self) -> &[(ObjectID, EffectsObjectChange)] {
+        &self.changed_objects
+    }
 }
 
 impl Default for TransactionEffectsV2 {