import { ConversationTurnEvent } from './types';
export type UserAgentAdditionalMetadata = {
    'turn-response-type'?: 'single' | 'streaming' | 'error';
};
/**
 * Provides user agent.
 */
export declare class UserAgentProvider {
    private readonly event;
    /**
     * Creates user agent provider instance.
     */
    constructor(event: ConversationTurnEvent);
    getUserAgent: (additionalMetadata?: UserAgentAdditionalMetadata) => string;
}
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