Name	Description
backup
das
drs
drsPower	*Since*
esxExpress
esxFull
esxHost
esxVmtn
gsxHost
iscsi
nas
san
serverHost	*Since*
vc
vcExpress	*Since*
vmotion
vsmp

         <simpleType xmlns="http://www.w3.org/2001/XMLSchema" xmlns:vsan="urn:vsan" name="LicenseManagerLicenseKey">
            <restriction base="xsd:string">
               <enumeration value="esxFull"/>
               <enumeration value="esxVmtn"/>
               <enumeration value="esxExpress"/>
               <enumeration value="san"/>
               <enumeration value="iscsi"/>
               <enumeration value="nas"/>
               <enumeration value="vsmp"/>
               <enumeration value="backup"/>
               <enumeration value="vc"/>
               <enumeration value="vcExpress"/>
               <enumeration value="esxHost"/>
               <enumeration value="gsxHost"/>
               <enumeration value="serverHost"/>
               <enumeration value="drsPower"/>
               <enumeration value="vmotion"/>
               <enumeration value="drs"/>
               <enumeration value="das"/>
            </restriction>
         </simpleType>

Enum - LicenseManagerLicenseKey(vim.LicenseManager.LicenseKey)

Enum Description