/**
 * Sets the date of birth of the user. Alternatively takes in null values for all parameters to set date of birth to null.
 *
 * @param year
 * @param month - 1-12
 * @param day
 *
 * @returns Resolves to a boolean that indicates whether the update was successfully enqueued. Resolves to undefined
 *   if the SDK is not initialized.
 */
export declare function setUserDateOfBirth(year: number | null, month: number | null, day: number | null): Promise<boolean | undefined>;