declare namespace Ext {
    export namespace util {
        export interface ProtoElementConfig {
        }

        export class ProtoElement extends Ext.Base  {
            public clsProp?: any;
            public removedProp?: any;
            public styleIsText?: any;
            public styleProp?: any;
            public addCls(cls?: string): Ext.util.ProtoElement;
            public flush(): void;
            public hasCls(cls?: string): boolean;
            public removeCls(cls?: string): Ext.util.ProtoElement;
            public setStyle(prop?: object, value?: object): Ext.util.ProtoElement;
            public writeTo(to?: object): object;
        }
    }
}