Task: Sleep Function Node

n8n workflow JSON:
{"nodes":[{"name":"Sleep 5 Seconds","type":"n8n-nodes-base.function","position":[850,510],"parameters":{"functionCode":"function sleep(milliseconds) {\n  return new Promise(\n    resolve => setTimeout(resolve, milliseconds)\n  );\n}\n\nawait sleep(5000);\n\n// Output data\nreturn items;"},"typeVersion":1}],"connections":{}}