This type enumerates the set of status values for logout operations. The schema for this type MUST be as follows:

   <simpleType name="LogoutStatusType">
     <restriction base="string">
       <enumeration value="InProgress" />
       <enumeration value="LogoutPartial" />
       <enumeration value="LogoutSuccess" />

InProgress:  Indicates that more logout work is required to be performed.

LogoutPartial:  Indicates that the logout process is complete, but all session participants might not have been logged out.

LogoutSuccess:  Indicates the logout process is complete, with all session participants logged out.