src/vs/workbench/contrib/comments/browser/commentsEditorContribution.ts/CommentController/dispose
class CommentController:	public dispose(): void {
		this.globalToDispose.dispose();
		this.localToDispose.dispose();
		dispose(this._editorDisposables);
		dispose(this._commentWidgets);

		this.editor = null!; // Strict null override - nulling out in dispose
	}