Added __deepcopy__

Author: Nicola Camillucci

sdk/keyvault/azure-keyvault-keys/azure/keyvault/keys/crypto/_models.py

@@ -318,6 +318,16 @@ def __copy__(self) -> KeyVaultRSAPublicKey:
         """
         return self
 
+    def __deepcopy__(self, memo: dict) -> KeyVaultRSAPublicKey:
+        """Returns this instance since it is treated as immutable.
+
+        :param dict memo: Memo dictionary used by `copy.deepcopy`.
+
+        :returns: This instance.
+        :rtype: ~azure.keyvault.keys.crypto.KeyVaultRSAPublicKey
+        """
+        return self
+
     def verifier(  # pylint:disable=docstring-missing-param,docstring-missing-return,docstring-missing-rtype
         self, signature: bytes, padding: AsymmetricPadding, algorithm: HashAlgorithm
     ) -> NoReturn:
@@ -500,6 +510,16 @@ def __copy__(self) -> KeyVaultRSAPrivateKey:
         """
         return self
 
+    def __deepcopy__(self, memo: dict) -> KeyVaultRSAPrivateKey:
+        """Returns this instance since it is treated as immutable.
+
+        :param dict memo: Memo dictionary used by `copy.deepcopy`.
+
+        :returns: This instance.
+        :rtype: ~azure.keyvault.keys.crypto.KeyVaultRSAPrivateKey
+        """
+        return self
+
 
 class DecryptResult:
     """The result of a decrypt operation.