export declare class QualificationCategory {
    category?: string;
    private 'initial_issue_date'?;
    private 'issue_date'?;
    private 'expiry_date'?;
    constructor();
    withCategory(category: string): QualificationCategory;
    withInitialIssueDate(initialIssueDate: string): QualificationCategory;
    set initialIssueDate(initialIssueDate: string | undefined);
    get initialIssueDate(): string | undefined;
    withIssueDate(issueDate: string): QualificationCategory;
    set issueDate(issueDate: string | undefined);
    get issueDate(): string | undefined;
    withExpiryDate(expiryDate: string): QualificationCategory;
    set expiryDate(expiryDate: string | undefined);
    get expiryDate(): string | undefined;
}
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