namespace Microsoft.AspNetCore.Identity
{
    public abstract class UserStoreBase<TUser, TKey, TUserClaim, TUserLogin, TUserToken> : IQueryableUserStore<TUser>, IUserAuthenticationTokenStore<TUser>, IUserAuthenticatorKeyStore<TUser>, IUserClaimStore<TUser>, IUserEmailStore<TUser>, IUserLockoutStore<TUser>, IUserLoginStore<TUser>, IUserPasswordStore<TUser>, IUserPhoneNumberStore<TUser>, IUserSecurityStampStore<TUser>, IUserStore<TUser>, IUserTwoFactorRecoveryCodeStore<TUser>, IUserTwoFactorStore<TUser>, IDisposable
        where TUser, IdentityUser<TKey>
        where TKey, IEquatable<TKey>
        where TUserClaim, new(), IdentityUserClaim<TKey>
        where TUserLogin, new(), IdentityUserLogin<TKey>
        where TUserToken, new(), IdentityUserToken<TKey>
    {
        public virtual Task<string> GetEmailAsync(TUser user, CancellationToken cancellationToken = default);
    }
}