declare namespace org {
    namespace eclipse {
        namespace jetty {
            namespace websocket {
                namespace common {
                    namespace extensions {
                        class ExtensionStack extends org.eclipse.jetty.util.component.ContainerLifeCycle implements org.eclipse.jetty.websocket.api.extensions.IncomingFrames , org.eclipse.jetty.websocket.api.extensions.OutgoingFrames {
                            public constructor(arg0: org.eclipse.jetty.websocket.api.extensions.ExtensionFactory | org.eclipse.jetty.websocket.api.extensions.ExtensionFactory$$Lambda)
                            public configure(arg0: org.eclipse.jetty.websocket.common.Generator): void
                            public configure(arg0: org.eclipse.jetty.websocket.common.Parser): void
                            protected doStart(): void
                            public dump(arg0: java.lang.Appendable, arg1: java.lang.String | string): void
                            public getExtensions(): java.util.List<org.eclipse.jetty.websocket.api.extensions.Extension>
                            public getNegotiatedExtensions(): java.util.List<org.eclipse.jetty.websocket.api.extensions.ExtensionConfig>
                            public getNextIncoming(): org.eclipse.jetty.websocket.api.extensions.IncomingFrames
                            public getNextOutgoing(): org.eclipse.jetty.websocket.api.extensions.OutgoingFrames
                            public hasNegotiatedExtensions(): boolean
                            public incomingError(arg0: java.lang.Throwable): void
                            public incomingFrame(arg0: org.eclipse.jetty.websocket.api.extensions.Frame): void
                            public negotiate(arg0: java.util.List<org.eclipse.jetty.websocket.api.extensions.ExtensionConfig>): void
                            public outgoingFrame(arg0: org.eclipse.jetty.websocket.api.extensions.Frame, arg1: org.eclipse.jetty.websocket.api.WriteCallback, arg2: org.eclipse.jetty.websocket.api.BatchMode): void
                            public setNextIncoming(arg0: org.eclipse.jetty.websocket.api.extensions.IncomingFrames): void
                            public setNextOutgoing(arg0: org.eclipse.jetty.websocket.api.extensions.OutgoingFrames | org.eclipse.jetty.websocket.api.extensions.OutgoingFrames$$Lambda): void
                            public setPolicy(arg0: org.eclipse.jetty.websocket.api.WebSocketPolicy): void
                            public toString(): string
                            public static class: java.lang.Class<any>
                        }
                    }
                }
            }
        }
    }
}