*/
  private static void movePivotToStartOfSlice(double[] array, int from, int to) {
    int mid = (from + to) >>> 1;
    // We want to make a swap such that either array[to] <= array[from] <= array[mid], or
    // array[mid] <= array[from] <= array[to]. We know that from < to, so we know mid < to
    // (although it's possible that mid == from, if to == from + 1). Note that the postcondition

    assertEquals("google.com", InternetDomainName.from("www.google.com").parent().toString());

    try {
      InternetDomainName.from("com").parent();
      fail("'com' should throw ISE on .parent() call");
    } catch (IllegalStateException expected) {
    }
  }

  public void testChild() {
    InternetDomainName domain = InternetDomainName.from("foo.com");

  }

  public void testGet() {
    assertEquals("a", FluentIterable.from(Lists.newArrayList("a", "b", "c")).get(0));
    assertEquals("b", FluentIterable.from(Lists.newArrayList("a", "b", "c")).get(1));
    assertEquals("c", FluentIterable.from(Lists.newArrayList("a", "b", "c")).get(2));
  }

  public void testGet_outOfBounds() {
    try {
      FluentIterable.from(Lists.newArrayList("a", "b", "c")).get(-1);
      fail();

   * "inherited" from superclasses of the same package.
   */
  public void testAllPublicStaticMethods(Class<?> c) {
    testStaticMethods(c, Visibility.PUBLIC);
  }

  /**
   * Runs {@link #testMethod} on every instance method of the class of {@code instance} with at
   * least {@code minimalVisibility}, including those inherited from superclasses of the same
   * package.
   */

    final Spliterator<InElementT> from;
    final Function<? super InElementT, @Nullable OutSpliteratorT> function;
    final Factory<InElementT, OutSpliteratorT> factory;
    int characteristics;
    long estimatedSize;

    FlatMapSpliterator(
        @CheckForNull OutSpliteratorT prefix,
        Spliterator<InElementT> from,
        Function<? super InElementT, @Nullable OutSpliteratorT> function,

    return FluentIterable.from(resources).filter(ClassInfo.class).toSet();
  }

  /**
   * Returns all top level classes loadable from the current class path. Note that "top-level-ness"
   * is determined heuristically by class name (see {@link ClassInfo#isTopLevel}).
   */
  public ImmutableSet<ClassInfo> getTopLevelClasses() {
    return FluentIterable.from(resources)
        .filter(ClassInfo.class)

    final Bound to;
    final Bound from;
    final K firstInclusive;
    final K lastInclusive;
    private final Comparator<Entry<K, V>> entryComparator;

    public SortedMapSubmapTestMapGenerator(
        TestSortedMapGenerator<K, V> delegate, Bound to, Bound from) {
      super(delegate);
      this.to = to;
      this.from = from;

      SortedMap<K, V> emptyMap = delegate.create();

    @CanIgnoreReturnValue // pushed down from class to method
    @Override
    public boolean hasNext() {
      return cursor < array.length;
    }

    @CanIgnoreReturnValue // pushed down from class to method
    @Override
    public E next() {
      if (cursor >= array.length) throw new NoSuchElementException();
      lastRet = cursor;

      // array comes from q.toArray() and so should have only E's in it

This is because we also have another variable named `router` in the submodule `users`.

If we had imported one after the other, like:

```Python
from .routers.items import router
from .routers.users import router
```

the `router` from `users` would overwrite the one from `items` and we wouldn't be able to use them at the same time.

So, to be able to use both of them in the same file, we import the submodules directly:

from fastapi.dependencies.utils import get_flat_dependant, get_flat_params
from fastapi.encoders import jsonable_encoder
from fastapi.openapi.constants import METHODS_WITH_BODY, REF_PREFIX, REF_TEMPLATE
from fastapi.openapi.models import OpenAPI
from fastapi.params import Body, Param
from fastapi.responses import Response
from fastapi.types import ModelNameMap
from fastapi.utils import (
    deep_dict_update,