import { CallProtocolInput } from '../inputs';
import { CallIdUnion, ErrorUnion } from '../outputs';
/**
 * Creates a new call
 * @param {Object} params
 * @param {number} [params.userId] - Identifier of the user to be called
 * @param {CallProtocolInput} [params.protocol] - Description of the call protocols
 * supported by the client
 * @param {Object} state
 * @returns {CallIdUnion | ErrorUnion}
 */
export declare type CreateCallMethod = <ResponseT = CallIdUnion>(params: CreateCallParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface CreateCallParams {
    /** Identifier of the user to be called */
    userId?: number;
    /** Description of the call protocols supported by the client */
    protocol?: CallProtocolInput;
}