How to use the n8n-core.ActiveWorkflows function in n8n-core

async init() {
		// Get the active workflows from database
		const workflowsData: IWorkflowDb[] = await Db.collections.Workflow!.find({ active: true }) as IWorkflowDb[];

		this.activeWebhooks = new ActiveWebhooks();

		// Add them as active workflows
		this.activeWorkflows = new ActiveWorkflows();

		if (workflowsData.length !== 0) {
			console.log('\n ================================');
			console.log('   Start Active Workflows:');
			console.log(' ================================');

			for (const workflowData of workflowsData) {
				console.log(`   - ${workflowData.name}`);
				try {
					await this.add(workflowData.id.toString(), workflowData);
					console.log(`     => Started`);
				} catch (error) {
					console.log(`     => ERROR: Workflow could not be activated:`);
					console.log(`               ${error.message}`);
				}
			}