code: def test_marshal_with_skip_none(self):
      model = OrderedDict(
          [
              ("foo", fields.Raw),
              ("bat", fields.Raw),
              ("qux", fields.Raw),
          ]
      )
      marshal_dict = OrderedDict([("foo", "bar"), ("bat", None)])
      output = marshal(marshal_dict, model, skip_none=True)
      assert output == {"foo": "bar"}
  
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 6 for calling the MarshallingTest obj's underlying member method code with example usage: obj.test_marshal_with_skip_none() without return types