public void setDomainPrefix(String domainPrefix) {
        this.domainPrefix = domainPrefix;
    }
<p>
The Amazon Cognito domain prefix used to create a hosted UI for authentication.
</p>

@param domainPrefix
       The Amazon Cognito domain prefix used to create a hosted UI for authentication.
aws-java-sdk-amplifybackend/src/main/java/com/amazonaws/services/amplifybackend/model/UpdateBackendAuthOAuthConfig.java