/**
 * Defines the contract for a merge service.
 *
 * Any service implementing this interface is expected to:
 * - Transfer all references from one account to another.
 * - Ensure that all account ID fields are updated.
 */
export interface MergeServiceClass {
    /**
     * Merge all references from the old account into the new account.
     *
     * @param {string} oldAccountId - The identifier of the account being replaced.
     * @param {string} newAccountId - The identifier of the account that should own all references.
     * @returns {Promise<void>} Resolves when the merge operation is complete.
     */
    mergeAccount(oldAccountId: string, newAccountId: string): Promise<void>;
}