[android-components](../../index.md) / [mozilla.components.concept.fetch](../index.md) / [MutableHeaders](index.md) / [append](./append.md)

# append

`fun append(name: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`, value: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`): `[`MutableHeaders`](index.md) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/concept/fetch/src/main/java/mozilla/components/concept/fetch/Headers.kt#L139)

Append a header without removing the headers already present.

