How to call method of child component from parent in EmberJS

I’ve hit an interesting issue that doesn’t fit with Ember’s data down, actions up principle.

I have a code editor component (code-editor) sat inside a parent component (request-editor). There's a method on the editor component to insert a string at the current cursor position. The parent component includes some buttons to insert things into the editor (e.g. the current date).

I think I'm right in separating the buttons from the editor because the editor is used elsewhere without these buttons.

It obviously doesn't make sense to use a bound variable for this use-case because it's not really data, it's wanting to perform an action. I.e. makes no sense.

How is it possible to effectively call codeEditorChildComponent.insert() from the parent component? I appreciate it will probably involve coupling them together but they have to be coupled for it to work anyway. The parent component is composed of the child components already.