func (a *Client) VirtualMachinesPowerOff(params *VirtualMachinesPowerOffParams, authInfo runtime.ClientAuthInfoWriter) (*VirtualMachinesPowerOffOK, *VirtualMachinesPowerOffAccepted, error) {
    // TODO: Validate the params before sending
    if params == nil {
        params = NewVirtualMachinesPowerOffParams()
    }