How to use the n8n-core.UserSettings.prepareUserSettings function in n8n-core

// Wait till the database is ready
		await startDbInitPromise;

		if (flags.id) {
			// Id of workflow is given
			workflowId = flags.id;
			workflowData = await Db.collections!.Workflow!.findOne(workflowId);
			if (workflowData === undefined) {
				GenericHelpers.logOutput(`The workflow with the id "${workflowId}" does not exist.`);
				return;
			}
		}

		// Make sure the settings exist
		await UserSettings.prepareUserSettings();

		// Wait till the n8n-packages have been read
		await loadNodesAndCredentialsPromise;

		// Add the found types to an instance other parts of the application can use
		const nodeTypes = NodeTypes();
		await nodeTypes.init(loadNodesAndCredentials.nodeTypes);

		if (!WorkflowHelpers.isWorkflowIdValid(workflowId)) {
			workflowId = undefined;
		}

		// Check if the workflow contains the required "Start" node
		// "requiredNodeTypes" are also defined in editor-ui/views/NodeView.vue
		const requiredNodeTypes = ['n8n-nodes-base.start'];
		let startNodeFound = false;

(async () => {
			try {
				// Start directly with the init of the database to improve startup time
				const startDbInitPromise = Db.init();

				// Make sure the settings exist
				const userSettings = await UserSettings.prepareUserSettings();

				// Load all node and credential types
				const loadNodesAndCredentials = LoadNodesAndCredentials();
				await loadNodesAndCredentials.init();

				// Add the found types to an instance other parts of the application can use
				const nodeTypes = NodeTypes();
				await nodeTypes.init(loadNodesAndCredentials.nodeTypes);
				const credentialTypes = CredentialTypes();
				await credentialTypes.init(loadNodesAndCredentials.credentialTypes);

				// Wait till the database is ready
				await startDbInitPromise;

				if (flags.tunnel === true) {
					this.log('\nWaiting for tunnel ...');