I was looking through the ml.net api for a generalized data loader, and I could not find one. So here is my proposal:

Take the following example for the TextLoader:

var dataPath = "intents.txt";
pipeline.Add(new TextLoader<IntentData>(dataPath, separator: "tab"));

I would like to have something like this:

var intents = new List<IntentData();
intents.Add(new IntentData());
pipeline.Add(new ListLoader<IntentData>(intents));

With a generalized loader like this I would have a wider range of sources for my data.