### Provider-specific Notes

#### Various

   Core changes:

  * Support for load balancers with source ranges

#### AWS

Core changes:

  * Support for ELBs with complex configurations: better subnet selection with
multiple subnets, and internal ELBs
  * Support for VPCs with private dns names
  * Multiple fixes to EBS volume mounting code for robustness, and to support

import java.util.UUID;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import org.apache.maven.api.Version;
import org.apache.maven.api.services.model.ModelVersionParser;
import org.eclipse.aether.util.version.GenericVersionScheme;
import org.junit.jupiter.api.Test;

import static java.util.stream.Collectors.toList;
import static org.junit.jupiter.api.Assertions.fail;

/**
 */

  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNullPointers() {
    NullPointerTester tester = new NullPointerTester();
    tester.setDefault(double.class, 3.0);
    tester.testAllPublicStaticMethods(DoubleMath.class);
  }

cc.ri.us cc.sc.us cc.sd.us cc.tn.us cc.tx.us cc.ua cc.ut.us cc.va.us cc.vi.us cc.vt.us cc.wa.us cc.wi.us cc.wv.us cc.wy.us cci.fr cd cd.eu.org cdn-edges.net cdn.prod.atlassian-dev.net cdn77-ssl.net ce.gov.br ce.it ce.leg.br cechire.com celtic.museum center center.museum centralus.azurestaticapps.net ceo cern certification.aero certmgr.org cesena-forli.it cesena-forlì.it cesenaforli.it cesenaforlì.it cf cf-ipfs.com cfa cfd cg ch ch.eu.org ch.it ch.tc ch.trendhosting.cloud chambagri.fr championship.aero...

   * structure (to make it possible to throw ConcurrentModificationException in the iterator). Note
   * that we choose not to make this volatile, so we do less of a "best effort" to track such
   * errors, for better performance.
   */
  private transient int metadata;

  /** The number of elements contained in the set. */
  private transient int size;

  /** Constructs a new empty instance of {@code CompactHashSet}. */

   *
   * <p><b>Performance note:</b> When feasible, {@code initialCapacity} should be the exact number
   * of values that will be added, if that knowledge is readily available. It is better to guess a
   * value slightly too high than slightly too low. If the value is not exact, the {@link
   * ImmutableLongArray} that is built will very likely occupy more memory than strictly necessary;

{!> ../../docs_src/bigger_applications/app/dependencies.py!}
```

////

/// tip

We are using an invented header to simplify this example.

But in real cases you will get better results using the integrated [Security utilities](security/index.md){.internal-link target=_blank}.

///

## Another module with `APIRouter`

And in those cases, we can use classes and inheritance to take advantage of function **type annotations** to get better support in the editor and tools, and still get the FastAPI **data filtering**.

//// tab | Python 3.10+

```Python hl_lines="7-10  13-14  18"
{!> ../../docs_src/response_model/tutorial003_01_py310.py!}
```

   *
   * <p><b>Performance note:</b> When feasible, {@code initialCapacity} should be the exact number
   * of values that will be added, if that knowledge is readily available. It is better to guess a
   * value slightly too high than slightly too low. If the value is not exact, the {@link
   * ImmutableIntArray} that is built will very likely occupy more memory than strictly necessary;

<h3 id="Identifiers">Identifiers</h3>

<p>
Identifiers name program entities such as variables and types.
An identifier is a sequence of one or more letters and digits.
The first character in an identifier must be a letter.
</p>
<pre class="ebnf">
identifier = letter { letter | unicode_digit } .
</pre>
<pre>
a
_x9
ThisVariableIsExported
αβ
</pre>

<p>