Capture references to multiple similar child-components

I was searching for documentation on how to capture references to child-components based on for-each creation.
Let's say I have a parent-component which itereates a collection to create multiple child-components:

```
@foreach (var singleDataPiece in aCollectionOfData)
{

}
```

I would like to call a method on one of these sub-components, identified by its id-value. Would you consider adding documentation on this scenario?

Many thanks in advance for your consideration.