export declare class ParameterValidator {
    static extractMailboxName(mailboxParam: string | {
        mode: string;
        value: string;
    }): string;
    static validateMailbox(mailboxParam: string | {
        mode: string;
        value: string;
    }): void;
    static validateMailboxes(mailboxParams: string[]): void;
    static validateUid(emailUid: string): void;
    static validateUids(emailUids: string | number | any): string[];
    static validateLimit(limit: number): void;
    static validateSearchParameters(searchParams: any): void;
}