export declare class UpdateTrainingCertificateDto {
    participant_name?: string;
    participant_company?: string;
    course_title?: string;
    standard_id?: number;
    training_location?: string;
    training_date?: Date;
    training_date_end?: Date | null;
    valid_until?: Date;
    certificate_no?: string;
    verification_domain?: string;
    status?: string;
    updated_by?: number;
}