declare namespace Ext {
    export namespace fx {
        export namespace easing {
            export interface BoundMomentumConfig {
                bounce?: object;
                minVelocity?: number;
                momentum?: object;
                startVelocity?: number;
            }

            export class BoundMomentum extends Ext.fx.easing.Abstract  {
                public getBounce(): void;
                public getMinVelocity(): void;
                public getMomentum(): void;
                public getStartVelocity(): void;
                public setBounce(): void;
                public setMinVelocity(): void;
                public setMomentum(): void;
                public setStartVelocity(): void;
            }
        }
    }
}