JavaScript components and the _element property

[kczx3]

Is the _element property intended to be considered private? That generally is the case but I wasn't seeing it specifically called out anywhere in this repo. I ask because I have a small third-party library I am considering consuming that eases the dynamic generation of Toasts, however the element that is passed to the constructor of bootstrap.Toast is created in the library code and not exposed to the consumer. So my only way of attaching a handler on the component would be to call myToast._element.addEventListener("hidden.bs.toast", ...). Thanks for your input!