Thrower pattern

Thrower.cs

// from https://forum.dotnetdev.kr/t/c-10-null-check-7/7069/2

public static class Thrower
{
	public static Exception ThrowIfFailedValidation<T>(T target, Func<T, bool> validation)
	{
		if (validation(target) is false)
		{
			throw new ValidationFailedException();
		}
	}
	
	public static Exception ThrowIfNullOrWhitespace(string? text, string? message)
	{
		if (string.IsNullOrWhiteSpace(text))
		{
			throw new TextNullOrWhitespaceException(message);
		}
	}

    public static Exception ThrowForbidden(string message, int resultCode)
    {
        throw new ForbiddenException(HttpStatusCode.Forbidden, message, resultCode);
    }

    public static Exception ThrowBadRequest(string message, int resultCode)
    {
        throw new BadRequestException(HttpStatusCode.BadRequest, message, resultCode);
    }

    public static Exception Throw500Error(string message, int resultCode)
    {
        throw new InternalServerErrorException(HttpStatusCode.BadRequest, message, resultCode);
    }

}