SPWebTemplate.ProvisionClass Property
Gets the name of a class that provides logic for provisioning sites created through the site definition configuration or Web template.
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: Yes
Available in SharePoint Online
If the SPWebTemplate represents a site definition configuration, this property is the value of the ProvisionClass attribute of a Configuration element in a WebTemp*.xml. (See Understanding WebTemp*.xml Files for more information.)
The ProvisionClass and ProvisionAssembly properties together define an assembly used to support creating sites through the site definition configuration or Web template.