model = ModelWithDefault(foo="foo", bar="bar")
    assert jsonable_encoder(model) == {"foo": "foo", "bar": "bar", "bla": "bla"}
    assert jsonable_encoder(model, exclude_unset=True) == {"foo": "foo", "bar": "bar"}
    assert jsonable_encoder(model, exclude_defaults=True) == {"foo": "foo"}
    assert jsonable_encoder(model, exclude_unset=True, exclude_defaults=True) == {
        "foo": "foo"
    }

    private static void assertModelIsPolymorphic(Object model) {
        assert model != null

        assert model instanceof BaseModel

        assert model instanceof ShallowChildModel
        assert ((ShallowChildModel) model).getShallowMessage() == "shallow poly from 'root'"

        assert model instanceof DeepChildModel
        assert ((DeepChildModel) model).getDeepMessage() == "deep poly from 'root'"

# Build state model

The Gradle daemon tracks state for various elements. These are arranged in a hierarchy:

```mermaid
  graph TD

  process["build process"]
  
  session["build session"]
  process --> session
  
  build_tree["build tree"]
  session --> build_tree
  
  build1["root build"]
  build_tree --> build1
  
  project1["root project"]
  build1 --> project1
  
  project2["project"]
  build1 --> project2

	{"-F-dir"},
	{"-I@dir"},
	{"-I-dir"},
	{"-O@1"},
	{"-Wa,-foo"},
	{"-W@foo"},
	{"-Wp,-DX,-D@X"},
	{"-Wp,-UX,-U@X"},
	{"-g@gdb"},
	{"-g-gdb"},
	{"-march=@dawn"},
	{"-march=-dawn"},
	{"-mcmodel=@model"},
	{"-mlarge-data-threshold=@12"},
	{"-std=@c99"},
	{"-std=-c99"},
	{"-x@c"},
	{"-x-c"},
	{"-D", "@foo"},
	{"-D", "-foo"},
	{"-I", "@foo"},
	{"-I", "-foo"},
	{"-I", "=@obj"},

    <version>4.0.0-beta-4-SNAPSHOT</version>
  </parent>

  <artifactId>maven-model</artifactId>

  <name>Maven Model</name>
  <description>Model for Maven POM (Project Object Model)</description>

  <dependencies>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-api-model</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>

	wi1 := &model.WorkloadInstance{
		Name:      selector.Name,
		Namespace: selector.Namespace,
		Endpoint: &model.IstioEndpoint{
			Address: "2.2.2.2",
			Labels:  map[string]string{"app": "wle"}, // should match
		},
	}

	wi2 := &model.WorkloadInstance{
		Name:      "same-ip",
		Namespace: selector.Namespace,
		Endpoint: &model.IstioEndpoint{
			Address: "2.2.2.2",

        def model = withConnection {
            it.getModel(GradleBuild)
        }

        expect:
        model.includedBuilds.size() == 1
        def included = model.includedBuilds[0]
        included.buildIdentifier.rootDir == file("child")
        included.includedBuilds.size() == 1
        included.editableBuilds.empty

        model.editableBuilds.size() == 2

        model.editableBuilds[0].is(included)

 * under the License.
 */
package org.apache.maven.model.validation;

import java.util.List;

import org.apache.maven.model.Model;
import org.apache.maven.model.Profile;
import org.apache.maven.model.building.ModelBuildingRequest;
import org.apache.maven.model.building.ModelProblemCollector;

/**
 * Checks the model for missing or invalid values.
 *
 */
public interface ModelValidator {
    /**

    }

    def "retains underlying object identity in model returned to client"() {
        when:
        def model = withConnection { connection ->
            connection.model(CustomModel).get()
        }

        then:
        model.thing.is(model.thing)
        model.things[0].is(model.thing)
        model.thingsByName.child.is(model.thing)
        model.findThing("child").is(model.thing)
    }

	allTriggers := []model.TriggerReason{
		model.EndpointUpdate,
		model.ConfigUpdate,
		model.ServiceUpdate,
		model.ProxyUpdate,
		model.GlobalUpdate,
		model.UnknownTrigger,
		model.DebugTrigger,
		model.SecretTrigger,
		model.NetworksTrigger,
		model.ProxyRequest,
		model.NamespaceUpdate,
	}
	// Number of (simulated) proxies
	proxies := 500