src/vs/workbench/browser/parts/editor/tabsTitleControl.ts/TabsTitleControl/openEditor
class TabsTitleControl:	openEditor(editor: IEditorInput): void {

		// Create tabs as needed
		const [tabsContainer, tabsScrollbar] = assertAllDefined(this.tabsContainer, this.tabsScrollbar);
		for (let i = tabsContainer.children.length; i < this.group.count; i++) {
			tabsContainer.appendChild(this.createTab(i, tabsContainer, tabsScrollbar));
		}

		// An add of a tab requires to recompute all labels
		this.computeTabLabels();

		// Redraw all tabs
		this.redraw();

		// Update Breadcrumbs
		this.breadcrumbsControl?.update();
	}