isDestroying

Returns if the instance is currently being destroyed.

`instance.isDestroying()`

Observes if a promise returned by connection.destroy is in progress for this instance. This is often used in a template like:

<button ($click)="todo.destroy()"
   {{#todo.isDestroying}}disabled{{/todo.isDestroying}}>
  Delete
</button>

{Boolean}:

true if connection.destroy has been called for this instance but the returned promise has not resolved.