src/vs/workbench/contrib/notebook/browser/viewParts/notebookEditorToolbar.ts/NotebookEditorToolbar/_showNotebookActionsinEditorToolbar
class NotebookEditorToolbar:	private _showNotebookActionsinEditorToolbar() {
		// when there is no view model, just ignore.
		if (!this.notebookEditor.hasModel()) {
			return;
		}

		if (!this._useGlobalToolbar) {
			this.domNode.style.display = 'none';
		} else {
			this._setNotebookActions();
		}

		this._onDidChangeState.fire();
	}