fix(boxsdkgen): Fix dictionary values deserialization (box/box-codegen#966) (#1510)

Author: box-sdk-build

.codegen.json

@@ -1 +1 @@
-{ "engineHash": "ed5236c", "specHash": "131c54a", "version": "4.12.0" }
+{ "engineHash": "5560f9a", "specHash": "131c54a", "version": "4.12.0" }

box_sdk_gen/internal/base_object.py

@@ -81,6 +81,8 @@ def _deserialize(cls, key, value, annotation=None):
 
         if get_origin(annotation) == list:
             return cls._deserialize_list(key, value, annotation)
+        elif get_origin(annotation) == dict:
+            return cls._deserialize_dict(key, value, annotation)
         elif get_origin(annotation) == Union:
             return cls._deserialize_union(key, value, annotation)
         elif isinstance(annotation, EnumMeta):
@@ -104,6 +106,17 @@ def _deserialize_list(cls, key, value, annotation: list):
         except Exception:
             return value
 
+    @classmethod
+    def _deserialize_dict(cls, key, value, annotation):
+        try:
+            args = get_args(annotation)
+            if len(args) < 2:
+                return value
+            value_type = args[1]
+            return {k: cls._deserialize(key, v, value_type) for k, v in value.items()}
+        except Exception:
+            return value
+
     @classmethod
     def _deserialize_union(cls, key, value, annotation):
         try: