src/vs/workbench/services/keybinding/common/macLinuxKeyboardMapper.ts/MacLinuxKeyboardMapper/getDispatchStrForScanCodeBinding
class MacLinuxKeyboardMapper:	public getDispatchStrForScanCodeBinding(keypress: ScanCodeBinding): string | null {
		const codeDispatch = this._scanCodeToDispatch[keypress.scanCode];
		if (!codeDispatch) {
			return null;
		}
		let result = '';

		if (keypress.ctrlKey) {
			result += 'ctrl+';
		}
		if (keypress.shiftKey) {
			result += 'shift+';
		}
		if (keypress.altKey) {
			result += 'alt+';
		}
		if (keypress.metaKey) {
			result += 'meta+';
		}
		result += codeDispatch;

		return result;
	}