Use of oslc:Property to define usage of rdf:type?

In https://tools.oasis-open.org/version-control/browse/wsvn/oslc-ccm/trunk/specs/config-mgt/activity-shapes.ttl
the rdf:type of and oslc:Activity is described:

<#acttype>

    a      
                 oslc:Property
;

    oslc:name    
           "type" ;

    oslc:propertyDefinition
 rdf:type ;

    oslc:occurs    
         oslc:One-or-many ;

    oslc:readOnly  
         true ;

    oslc:representation  
   oslc:Reference ;

    oslc:valueType  
        oslc:Resource ;

    dcterms:description  
   """A resource type URI. An Activity MUST have
a resource type of <code>oslc_config:Activity</code>,

and MAY have other types."""^^rdf:XMLLiteral
.

rdf:type is multi-valued but the description
made by <#actype> is particular to exactly one of those values, not
all of them (I assume that is the intention).

best wishes,

    -ian

 (Ian Green1/UK/IBM@IBMGB)

IBM Rational

Unless stated otherwise above:

IBM United Kingdom Limited - Registered in England and Wales with number
741598. 

Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6
3AU