datasources.json

"google": {
  "name": "google",
  "debug": true,
  "connector": "rest",
  "operations": [
    {
      "template": {
        "doc": "The Google Time Zone API",
        "method": "GET",
        "url": "https://maps.googleapis.com/maps/api/timezone/{format=json}",
        "headers": {
          "content-type": "application/json",
          "accept": "application/json"
        },
        "query": {
          "location": "{!lat},{!lng}",
          "timestamp": "{!timestamp:number}",
          "key": "{appKey:string}",
          "language": "{language:string}"
        },
        "variables": {
          "lat": {
            "type": "number",
            "format": "double",
            "required": true,
            "doc": "Latitude"
          },
          "lng": {
            "type": "number",
            "format": "double",
            "required": true,
            "doc": "Longitude"
          },
          "timestamp": {
            "type": "number",
            "required": true,
            "doc": "Time as seconds since midnight, January 1, 1970 UTC to determine daylight savings"
          }
        }
      },
      "functions": {
        "timezone": [
          "lat",
          "lng",
          "timestamp"
        ]
      }
    }
  ]
}