Any way to eject all media?

Hi,

I am trying to eject the media of all vm's in an org but I am having trouble.  Is there an easy way to do this?

As an example with just one vm.

PowerCLI C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI> $vms

Name                           Status                      GuestOSFullName                          CpuCount MemoryGB
----                           ------                      ---------------                          -------- --------
vcenter                        PoweredOn                   Microsoft Windows Server 2008 R2 (64-... 2        4.000

PowerCLI C:\Program Files (x86)\VMware\Infrastructure\vSphere PowerCLI> $vms.ExtensionData.EjectMedia()
Cannot find an overload for "EjectMedia" and the argument count: "0".
At line:1 char:30
+ $vms.ExtensionData.EjectMedia <<<< ()
    + CategoryInfo          : NotSpecified: (:) [], MethodException
    + FullyQualifiedErrorId : MethodCountCouldNotFindBest

I am not great at all with powercli so forgive me if this is an easy one

Thanks!