src/vs/workbench/contrib/terminal/browser/terminalTabbedView.ts/TerminalTabbedView/_refreshShowTabs
class TerminalTabbedView:	private _refreshShowTabs() {
		if (this._shouldShowTabs()) {
			if (this._splitView.length === 1) {
				this._addTabTree();
				this._addSashListener();
				this._splitView.resizeView(this._tabTreeIndex, this._getLastListWidth());
				this.rerenderTabs();
			}
		} else {
			if (this._splitView.length === 2 && !this._terminalTabsMouseContextKey.get()) {
				this._splitView.removeView(this._tabTreeIndex);
				if (this._plusButton) {
					this._tabContainer.removeChild(this._plusButton);
				}
				this._removeSashListener();
			}
		}
	}