src/vs/workbench/contrib/terminal/browser/terminalInstance.ts/TerminalLabelComputer/refreshLabel
class TerminalLabelComputer:	refreshLabel(reset?: boolean): void {
		this._title = this.computeLabel(this._configHelper.config.tabs.title, TerminalLabelType.Title, reset);
		this._description = this.computeLabel(this._configHelper.config.tabs.description, TerminalLabelType.Description);
		if (this._title !== this._instance.title || this._description !== this._instance.description || reset) {
			this._onDidChangeLabel.fire({ title: this._title, description: this._description });
		}
	}