UserClaimsRepository.cs

public class UserClaimsRepository: IUserClaimsRepository
{
    private readonly ICommander<UserClaimsRepository> _commander;

    public UserClaimsRepository(ICommander<UserClaimsRepository> commander) => _commander = commander;

    public async Task<IEnumerable<UserClaims>> FindClaimsByUserNameAsync(string userName) =>
        await _commander.QueryAsync<UserClaims>(new { userName });
}