public String getExtensionIdentifier() {
        return this.extensionIdentifier;
    }
<p>
The name, ID, or Amazon Resource Name (ARN) of the extension you want to delete.
</p>

@return The name, ID, or Amazon Resource Name (ARN) of the extension you want to delete.
aws-java-sdk-appconfig/src/main/java/com/amazonaws/services/appconfig/model/DeleteExtensionRequest.java