This class and its members are reserved for internal use and are not intended to be used in your code.
[SharePointPermissionAttribute(SecurityAction.Demand, ObjectModel = true)]
[SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel = true)]
public class ExemptField : SPField
Any public static
in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.