import { IElement } from 'fhirtypes/dist/r4';
import { Period } from '../../models';
import { IBuildable } from '../base/IBuildable';
import { UnderscoreKeys } from '../base/resource-type-map.interface';
import { ElementBuilder } from '../base/ElementBuilder';
type PrimitiveExtensionFields = keyof Pick<Period, UnderscoreKeys<Period>>;
interface IPeriodBuilder extends IBuildable<Period> {
    setStart(value: string): this;
    setEnd(value: string): this;
}
/**
 * @description Class to build a Period instance with the builder pattern
 */
export declare class PeriodBuilder extends ElementBuilder implements IPeriodBuilder {
    private readonly period;
    constructor();
    /**
     * @description Adds a parameter extension to the period
     * @param param - The parameter name ('start' or 'end')
     * @param extension - The extension to add
     * @returns The instance of PeriodBuilder for method chaining
     */
    addPrimitiveExtension(param: PrimitiveExtensionFields, extension: IElement): this;
    /**
     * @description Sets the start date of the period
     * @param value - The start date as a string
     * @returns The instance of PeriodBuilder for method chaining
     */
    setStart(value: string): this;
    /**
     * @description Sets the end date of the period
     * @param value - The end date as a string
     * @returns The instance of PeriodBuilder for method chaining
     */
    setEnd(value: string): this;
    /**
     * @description Builds and returns the Period instance
     * @returns The built Period instance
     */
    build(): Period;
}
export {};