export declare class SecurePay {
    private clientId;
    private clientSecret;
    constructor(options?: {
        clientId: string;
        clientSecret: string;
    });
    /**
     * Set / Update Credential
     *
     * @param {string} clientId
     * @param {string} clientSecret
     */
    setCredential(clientId: string, clientSecret: string): void;
}