CodingKeys Enum for renaming JSON keys

CodingKeysExample.swift

struct GeocodingResult:Codable{
    struct Geometry:Codable{
        struct Location:Codable{
            let lat:Float
            let lng:Float
        }
        let location:Location
    }
    let formattedAddress:String
    let geometry:Geometry
    private enum CodingKeys: String, CodingKey {
        case formattedAddress = "formatted_address"
        case geometry
    }
}