How to use the pycfmodel.model.cf_model.CFModel function in pycfmodel

def test_resources_filtered_by_type():
    generic_resource = {"Logical ID": {"Type": "Resource type", "Properties": {"foo": "bar"}}}
    user = {"User": IAMUser()}

    model = CFModel(Resources={**generic_resource, **user})
    assert model.resources_filtered_by_type(("Resource type",)) == generic_resource
    assert model.resources_filtered_by_type(("Resource type", IAMUser)) == {**generic_resource, **user}
    assert model.resources_filtered_by_type((IAMUser,)) == user

def model():
    return CFModel(
        **{
            "AWSTemplateFormatVersion": "2012-12-12",
            "Description": "JSON string",
            "Metadata": {},
            "Parameters": {},
            "Mappings": {},
            "Conditions": {},
            "Transform": [],
            "Resources": {"Logical ID": {"Type": "Resource type", "Properties": {"foo": "bar"}}},
            "Rules": {},
            "Outputs": {},
        }

if self.Conditions:
            conditions = dict_value.pop("Conditions")
        else:
            conditions = {}
        resolved_conditions = {
            key: _extended_bool(resolve(value, extended_parameters, self.Mappings, {}))
            for key, value in conditions.items()
        }

        resources = dict_value.pop("Resources")
        resolved_resources = {
            key: resolve(value, extended_parameters, self.Mappings, resolved_conditions)
            for key, value in resources.items()
        }
        return CFModel(**dict_value, Conditions=resolved_conditions, Resources=resolved_resources)

def parse(template):
    return CFModel(**template)