declare namespace org {
    namespace eclipse {
        namespace jetty {
            namespace io {
                abstract class FillInterest {
                    protected constructor()
                    public register(arg0: org.eclipse.jetty.util.Callback): void
                    public fillable(): void
                    public isInterested(): boolean
                    public isCallbackNonBlocking(): boolean
                    public onFail(arg0: java.lang.Throwable): boolean
                    public onClose(): void
                    public toString(): string
                    public toStateString(): string
                    protected abstract needsFillInterest(): void
                    public static class: java.lang.Class<any>
                }
                interface FillInterest$$Lambda {
                    (): void
                }
            }
        }
    }
}