}

            project.extensions.create('thing', Thing3)

            thing.extensions.create('thing2', Thing)
            thing.thing.extensions.create('thing2', Thing)
            thing.thing.thing2.extensions.create('thing2', Thing)
            thing.thing2.extensions.create('thing2', Thing)

            thing {
                thing {
                    thing2 {

    @Override
    protected Set<String> create(String[] elements) {
      return ImmutableSet.copyOf(elements);
    }
  }

  public static class ImmutableSetUnsizedBuilderGenerator extends TestStringSetGenerator {
    @Override
    protected Set<String> create(String[] elements) {
      ImmutableSet.Builder<String> builder = ImmutableSet.builder();

    new EqualsTester()
        .addEqualityGroup(BloomFilter.create(Funnels.byteArrayFunnel(), 100, 0.01))
        .addEqualityGroup(BloomFilter.create(Funnels.byteArrayFunnel(), 100, 0.02))
        .addEqualityGroup(BloomFilter.create(Funnels.byteArrayFunnel(), 200, 0.01))
        .addEqualityGroup(BloomFilter.create(Funnels.byteArrayFunnel(), 200, 0.02))
        .addEqualityGroup(BloomFilter.create(Funnels.unencodedCharsFunnel(), 100, 0.01))

			actions: [][]string{
				{"create", "namespaces"},
				{"create", "namespaces"},
				{"create", "namespaces"},
				{"create", "namespaces"},
			},
		},
		{
			name:       "no system namespaces but others",
			namespaces: []string{"foo", "bar"},
			actions: [][]string{
				{"create", "namespaces"},
				{"create", "namespaces"},
				{"create", "namespaces"},
				{"create", "namespaces"},
			},
		},
		{

        return getDependencyFactory().create(getProject().project(projectPath));
    }

    /**
     * Returns the current project as a {@link ProjectDependency}.
     *
     * @return the current project as a dependency
     */
    default ProjectDependency project() {
        return getDependencyFactory().create(getProject());
    }

    /**

            }
            it.create("foo") {
                other += " create(foo)"
            }
            it.create("bar", specialItemClass) {
                other += " create(bar)"
            }
        }
        realize()

        then:
        realizeChild("foo").other == "Named create(foo)"
        realizeChild("bar").other == "Named Special SpecialItem create(bar)"
    }

                names.names.each { n ->
                    people.create { name = n }
                }
              }

              @Mutate void addPeople(ModelSet<Person> people) {
                people.create { name = "p3" }
                people.create { name = "p4" }
              }
            }

            apply type: Rules

            model {

Here, this section would run directly, right before starting your **FastAPI** application.

* Create an `engine`.
* Create all the tables from the `metadata` object.

```Python hl_lines="25-28"
{!../../../docs_src/async_sql_databases/tutorial001.py!}
```

## Create models

Create Pydantic models for:

* Notes to be created (`NoteIn`).

    SettableFuture<String> future = SettableFuture.create();
    SettableFuture<String> nested = SettableFuture.create();
    assertTrue(future.setFuture(nested));
    // Later attempts to set the future should return false.
    assertFalse(future.set("x"));
    assertFalse(future.setException(new Exception("bar")));
    assertFalse(future.setFuture(SettableFuture.<String>create()));
    // Check that the future has been set properly.

     */
    @Nonnull
    default ArtifactCoordinate create(@Nonnull Session session, @Nonnull String coordinateString) {
        return create(ArtifactCoordinateFactoryRequest.build(session, coordinateString));
    }

    @Nonnull
    default ArtifactCoordinate create(
            @Nonnull Session session, String groupId, String artifactId, String version, String extension) {