//CTOR
public TangleController(ITangleRepository repo, ILogger <TangleController> logger) // dependency injection
{
_repository = (TangleRepository)repo;
_logger = (Logger <TangleController>)logger;
}
//CTOR
public CoreController(ILogger <CoreController> logger, IConfiguration configuration, ITangleRepository repo) // dependency injection
{
//_repository = (TangleRepository)repo;
_logger = (Logger <CoreController>)logger;
_conf = configuration;
_repo = (TangleRepository)repo;
}