public CreateBackendRequest withAppId(String appId) {
        setAppId(appId);
        return this;
    }
<p>
The app ID.
</p>

@param appId
       The app ID.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-amplifybackend/src/main/java/com/amazonaws/services/amplifybackend/model/CreateBackendRequest.java