this.supportsEncryption = true;
            }
            else if ( ncr.getContextType() == EncryptionNegotiateContext.NEGO_CTX_ENC_TYPE ) {
                log.error("Multiple encryption negotiate contexts");
                return false;
            }
            else if ( !foundPreauth && ncr.getContextType() == PreauthIntegrityNegotiateContext.NEGO_CTX_PREAUTH_TYPE ) {

///

## Without Pydantic

					}
					atomic.AddInt64(&ops, int64(n))
					atomic.AddInt64(&lat, latency)
				})
				spent := time.Since(t)
				if spent > 0 && n > 0 {
					// Since we are benchmarking n parallel servers we need to multiply by n.
					// This will give an estimate of the total ops/s.
					latency := float64(atomic.LoadInt64(&lat)) / float64(time.Millisecond)
					b.ReportMetric(float64(n)*float64(ops)/spent.Seconds(), "vops/s")

# Header Parameter Models

If you have a group of related **header parameters**, you can create a **Pydantic model** to declare them.

This would allow you to **re-use the model** in **multiple places** and also to declare validations and metadata for all the parameters at once. 😎

/// note

This is supported since FastAPI version `0.115.0`. 🤓

///

## Header Parameters with a Pydantic Model

    }

    protected String getContextId(MavenInvokerRequest<MavenOptions> invokerRequest) {
        // TODO: in a moment Maven stop pushing user properties to system properties (and maybe something more)
        // and allow multiple instances per JVM, this may become a pool?
        return "resident";
    }

    @Override
    protected void container(LocalContext context) throws Exception {
        if (context.containerCapsule == null) {

				</DelMarkerExpiration>
                            <Status>Enabled</Status>
	                    </Rule>`,
			expectedErr: errInvalidRuleDelMarkerExpiration,
		},
		{
			inputXML: `<Rule>
				<ID>Rule with multiple tags and DelMarkerExpiration</ID>
				<Filter><And>
				<Tag><Key>k1</Key><Value>v1</Value></Tag>
				<Tag><Key>k2</Key><Value>v2</Value></Tag>
				</And></Filter>
				<DelMarkerExpiration>
					<Days>365</Days>

import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import javax.annotation.CheckForNull;

/**
 * An {@link InputStream} that concatenates multiple substreams. At most one stream will be open at
 * a time.
 *
 * @author Chris Nokleberg
 * @since 1.0
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault

<img src="/img/tutorial/bigger-applications/image01.png">

## Include the same router multiple times with different `prefix`

You can also use `.include_router()` multiple times with the *same* router using different prefixes.

This could be useful, for example, to expose the same API under different prefixes, e.g. `/api/v1` and `/api/latest`.

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

/// tip

To set multiple env vars for a single command just separate them with a space, and put them all before the command.

///

And then the `admin_email` setting would be set to `"******@****.***"`.

   *
   * <p>This is guaranteed to return zero if the dataset contains a single pair of finite values. It
   * is not guaranteed to return zero when the dataset consists of the same pair of values multiple
   * times, due to numerical errors.
   *
   * <h3>Non-finite values</h3>
   *
   * <p>If the dataset contains any non-finite values ({@link Double#POSITIVE_INFINITY}, {@link