func (a *Client) VirtualMachineScaleSetVmsPowerOff(params *VirtualMachineScaleSetVmsPowerOffParams, authInfo runtime.ClientAuthInfoWriter) (*VirtualMachineScaleSetVmsPowerOffOK, *VirtualMachineScaleSetVmsPowerOffAccepted, error) {
    // TODO: Validate the params before sending
    if params == nil {
        params = NewVirtualMachineScaleSetVmsPowerOffParams()
    }