src/vs/workbench/browser/parts/panel/panelActions.ts/FocusPanelAction/run
class FocusPanelAction:	override async run(): Promise<void> {

		// Show panel
		if (!this.layoutService.isVisible(Parts.PANEL_PART)) {
			this.layoutService.setPartHidden(false, Parts.PANEL_PART);
		}

		// Focus into active panel
		const panel = this.paneCompositeService.getActivePaneComposite(ViewContainerLocation.Panel);
		if (panel) {
			panel.focus();
		}
	}