return None for the external optional fields

cdp/smart_contract.py

@@ -117,13 +117,15 @@ def network_id(self) -> str:
         return self._model.network_id
 
     @property
-    def wallet_id(self) -> str:
+    def wallet_id(self) -> str | None:
         """Get the wallet ID that deployed the smart contract.
 
         Returns:
             The wallet ID.
 
         """
+        if self._model.is_external:
+            return None
         return self._model.wallet_id
 
     @property
@@ -147,13 +149,15 @@ def contract_name(self) -> str:
         return self._model.contract_name
 
     @property
-    def deployer_address(self) -> str:
+    def deployer_address(self) -> str | None:
         """Get the deployer address of the smart contract.
 
         Returns:
             The deployer address.
 
         """
+        if self._model.is_external:
+            return None
         return self._model.deployer_address
 
     @property
@@ -180,7 +184,7 @@ def type(self) -> Type:
         return self.Type(self._model.type)
 
     @property
-    def options(self) -> TokenContractOptions | NFTContractOptions | MultiTokenContractOptions:
+    def options(self) -> TokenContractOptions | NFTContractOptions | MultiTokenContractOptions | None:
         """Get the options of the smart contract.
 
         Returns:
@@ -190,6 +194,8 @@ def options(self) -> TokenContractOptions | NFTContractOptions | MultiTokenContr
             ValueError: If the smart contract type is unknown or if options are not set.
 
         """
+        if self._model.is_external:
+            return None
         if self._model.options is None or self._model.options.actual_instance is None:
             raise ValueError("Smart contract options are not set")
 
@@ -221,6 +227,8 @@ def transaction(self) -> Transaction | None:
             Transaction: The transaction.
 
         """
+        if self._model.is_external:
+            return None
         if self._transaction is None and self._model.transaction is not None:
             self._update_transaction(self._model)
         return self._transaction