code: def test_marshal_wildcard_list(self):
      wild = fields.Wildcard(fields.List(fields.String))
      wildcard_fields = OrderedDict([("*", wild)])
      model = OrderedDict([("preview", fields.Nested(wildcard_fields))])
      sub_dict = OrderedDict(
          [("1:1", [1, 2, 3]), ("16:9", [4, 5, 6]), ("9:16", [7, 8, 9])]
      )
      marshal_dict = OrderedDict([("preview", sub_dict)])
      output = marshal(marshal_dict, model)
      assert output == {
          "preview": {
              "9:16": ["7", "8", "9"],
              "16:9": ["4", "5", "6"],
              "1:1": ["1", "2", "3"],
          }
      }
  
imports: from __future__ import unicode_literals
  import pytest
  from flask_restplus import marshal, marshal_with, marshal_with_field, fields, Api, Resource
label_desc: Use image node_id 3 for calling the MarshallingTest obj's underlying member method code with example usage: obj.test_marshal_wildcard_list() without return types