mutation deviceSetEvCharging(
  $deviceId: ID!
  $chargingOn: Boolean!
  $commandSource: CommandSource
) {
  deviceSetEvCharging(
    deviceId: $deviceId
    chargingOn: $chargingOn
    commandSource: $commandSource
  ) {
    commandId 
    errors {
      message 
      path 
    }
  }
}