The resource in Microsoft Graph that you're referencing.
Aspose.Email (in Aspose.Email.dll) Version: 20.2
Public Enumeration ResourceType
public enum class ResourceType
Represents an Azure AD user account for currently signed user.
This resource is used by default.
Represents an Azure AD user account.
Represents an Azure Active Directory (Azure AD) group, which can be an Office 365 group, or a security group.