document enhancement: how to watch a field that is in an array?

The document shows how to watch a field:

editor.watch('path.to.field',function() {
  // Do something
});

editor.unwatch('path.to.field',function_reference);

I would like to watch a field that is in an array - how do I specify this as a watch?

Many thanks.

[jdorn]

To get a list of all currently watchable paths, you can console log the editor.editors property.

[ecamaj]

This should be closed …