code: def test_skip_none_presents_data(self):
      model = OrderedDict(
          [
              ("foo", fields.Raw),
              (
                  "fee",
                  fields.Nested(
                      OrderedDict(
                          [
                              ("fye", fields.String),
                              ("blah", fields.String),
                              ("foe", fields.String),
                          ]
                      ),
                      skip_none=True,
                  ),
              ),
          ]
      )
      marshal_fields = OrderedDict(
          [
              ("foo", "bar"),
              ("bat", "baz"),
              ("fee", {"blah": "cool", "foe": None}),
          ]
      )
      output = marshal(marshal_fields, model)
      expected = OrderedDict(
          [("foo", "bar"), ("fee", OrderedDict([("blah", "cool")]))]
      )
      assert output == expected
  
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 26 for calling the MarshallingTest obj's underlying member method code with example usage: obj.test_skip_none_presents_data() without return types