declare namespace java {
    namespace lang {
        // @ts-ignore
         class UnknownError extends java.lang.VirtualMachineError {
            /**
             * Constructs an <code>UnknownError</code> with no detail message.
             */
            // @ts-ignore
            constructor()
            /**
             * Constructs an <code>UnknownError</code> with the specified detail
             * message.
             */
            // @ts-ignore
            constructor(s: string)
        }
    }
}
