val headers =
      Headers.Builder()
        .add("content-length", "99")
        .add("authorization", "peanutbutter")
        .add("proxy-authorization", "chocolate")
        .add("cookie", "drink=coffee")
        .add("set-cookie", "accessory=sugar")
        .add("user-agent", "OkHttp")
        .build()
    assertThat(headers.toString()).isEqualTo(
      """
      |content-length: 99
      |authorization: ██

    val headers =
      Headers.Builder()
        .add("content-length", "99")
        .add("authorization", "peanutbutter")
        .add("proxy-authorization", "chocolate")
        .add("cookie", "drink=coffee")
        .add("set-cookie", "accessory=sugar")
        .add("user-agent", "OkHttp")
        .build()
    val request =
      Request(
        "https://square.com".toHttpUrl(),
        headers,
      )

 *       be thrown using {@code Throwable.addSuppressed(Throwable)}.
 *   <li><b>Java 6:</b> Exceptions are suppressed by logging them instead.
 * </ul>
 *
 * @author Colin Decker
 * @since 14.0
 */
// Coffee's for {@link Closer closers} only.
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public final class Closer implements Closeable {

    val headers =
      Headers.Builder()
        .add("content-length", "99")
        .add("authorization", "peanutbutter")
        .add("proxy-authorization", "chocolate")
        .add("cookie", "drink=coffee")
        .add("set-cookie", "accessory=sugar")
        .add("user-agent", "OkHttp")
        .build()
    val request =
      Request(
        "https://square.com".toHttpUrl(),
        headers,
      )

## Sponsor the author

You can also financially support the author (me) through <a href="https://github.com/sponsors/tiangolo" class="external-link" target="_blank">GitHub sponsors</a>.

There you could buy me a coffee ☕️ to say thanks. 😄

And you can also become a Silver or Gold sponsor for FastAPI. 🏅🎉

## Sponsor the tools that power FastAPI

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h:before{content:"\f384"}.fa-cloudversify:before{content:"\f385"}.fa-cocktail:before{content:"\f561"}.fa-code:before{content:"\f121"}.fa-code-branch:before{content:"\f126"}.fa-codepen:before{content:"\f1cb"}.fa-codiepie:before{content:"\f284"}.fa-coffee:before{content:"\f0f4"}.fa-cog:before{content:"\f013"}.fa-cogs:before{content:"\f085"}.fa-coins:before{content:"\f51e"}.fa-columns:before{content:"\f0db"}.fa-comment:before{content:"\f075"}.fa-comment-alt:before{content:"\f27a"}.fa-comment-dollar...

pkg syscall (freebsd-386-cgo), const IFT_CES ideal-int
pkg syscall (freebsd-386-cgo), const IFT_CHANNEL ideal-int
pkg syscall (freebsd-386-cgo), const IFT_CNR ideal-int
pkg syscall (freebsd-386-cgo), const IFT_COFFEE ideal-int
pkg syscall (freebsd-386-cgo), const IFT_COMPOSITELINK ideal-int
pkg syscall (freebsd-386-cgo), const IFT_DCN ideal-int
pkg syscall (freebsd-386-cgo), const IFT_DIGITALPOWERLINE ideal-int

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club

// clubmed : 2015-06-25 Club Méditerranée S.A.
clubmed

// coach : 2014-10-09 Binky Moon, LLC
coach

// codes : 2013-10-31 Binky Moon, LLC
codes

// coffee : 2013-10-17 Binky Moon, LLC
coffee

// college : 2014-01-16 XYZ.COM LLC
college

// cologne : 2014-02-05 dotKoeln GmbH
cologne

// comcast : 2015-07-23 Comcast IP Holdings I, LLC
comcast