src/vs/workbench/contrib/terminal/browser/terminalView.ts/TerminalViewPane/_gutterDecorationsEnabled
class TerminalViewPane:	private _gutterDecorationsEnabled(): boolean {
		const decorationsEnabled = this._configurationService.getValue(TerminalSettingId.ShellIntegrationDecorationsEnabled);
		return (decorationsEnabled === 'both' || decorationsEnabled === 'gutter') && this._configurationService.getValue(TerminalSettingId.ShellIntegrationEnabled);
	}