import { ISpecificationExtension } from './specification-extension';
export interface ServerObject extends ISpecificationExtension {
    url: string;
    description?: string;
    variables?: {
        [v: string]: ServerVariableObject;
    };
}
export interface ServerVariableObject extends ISpecificationExtension {
    enum?: string[] | boolean[] | number[];
    default: string | boolean | number;
    description?: string;
}
export declare function getExtension(obj: ISpecificationExtension | undefined, extensionName: string): any;
export declare function addExtension(obj: ISpecificationExtension | undefined, extensionName: string, extension: any): void;