Not possible to create SCP session from PowerShell

I'm trying to create SCP session using PowerShell cmdlets, but apparently there is no session type for 'Scp'

$scp_session = New-RDMSession -Type "Scp"  -Name "WinSCP"

New-RDMSession : Cannot validate argument on parameter 'Type'. The argument "Scp" does not belong to the set "ADConsole,AddOn,Agent,AppleRemoteDesktop,ApplicationTool
,Aws,Azure,AzureQueueStorage,AzureStorage,AzureTableStorage,BeyondTrustPasswordSafeConsole,ChromeRemoteDesktop,CitrixWeb,CommandLine,Computer,Contact,ControlUp,Creden
tial,Customer,Dameware,Database,DataEntry,DataReport,DataSource,DeskRoll,Desktone,DevolutionsProxy,Document,DropBox,Ftp,Gateway,Group,Host,HpRgs,HyperV,ICA,IDrac,Ilo,
IntelAMT,InventoryReport,Iterm,LogMeIn,PCAnywhere,PlayList,PortForward,PowerShell,PowerShellRemoteConsole,ProxyTunnel,PSExec,Putty,Radmin,RDCommander,RDPConfigured,RD
PFilename,RemoteAssistance,ResetPassword,S3,ScreenConnect,ScreenHero,SecureCRT,Serial,SessionTool,Sheet,SkyDrive,SNMPReport,Spiceworks,Splunk,SSHShell,SSHTunnel,Sync,
TeamViewer,TeamViewerConsole,Telnet,TemplateGroup,TerminalConsole,VirtualBox,VirtualPC,VMRC,VMWare,VMWareConsole,VNC,VPN,Wayk,WebBrowser,WebDav,WindowsVirtualPC,XenSe
rver,XWindow" specified by the ValidateSet attribute. Supply an argument that is in the set and then try the command again.
At line:1 char:37
+ $scp_session = New-RDMSession -Type "Scp"  -Name "WinSCP"
+                                     ~~~~~
    + CategoryInfo          : InvalidData: (:) [New-RDMSession], ParameterBindingValidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationError,RemoteDesktopManager.PowerShellModule.NewRDMSessionCommand

When I exported XML file from GUI with SCP session in it I got something like this, so I'm assuming that there should be 'Scp' type for session in PowerShell:

  <Connection>
    <ConnectionType>Scp</ConnectionType>
    <Group>TEST\Linux Servers</Group>
    <ID>26a734f1-a25d-4242-8ad2-94c5083285af</ID>
    <Name>SCP</Name>
    <OpenEmbedded>true</OpenEmbedded>
    <Stamp>77a1cb75-5990-412d-9274-2e8922c28004</Stamp>
    <Scp>
      <Host>$IP$</Host>
    </Scp>
  </Connection>