declare namespace org {
    namespace eclipse {
        namespace jetty {
            namespace util {
                class BlockingCallback implements org.eclipse.jetty.util.Callback$NonBlocking {
                    public constructor()
                    public succeeded(): void
                    public failed(arg0: java.lang.Throwable): void
                    public block(): void
                    public toString(): string
                    public static class: java.lang.Class<any>
                }
            }
        }
    }
}