---
title: "appending(_:)"
framework: createmlcomponents
role: symbol
role_heading: Instance Method
path: "createmlcomponents/transformer/appending(_:)"
---

# appending(_:)

Composes this transformer with an annotated-feature transformer.

## Declaration

```swift
func appending<Other, Annotation>(_ other: Other) -> some Transformer<AnnotatedFeature<Self.Input, Annotation>, Other.Output> where Other : Transformer, Other.Input == AnnotatedFeature<Self.Output, Annotation>

```