// Copyright (c) 2008 DMTF.  All rights reserved.
   [Version ( "2.19.0" ), 
    UMLPackagePath ( "CIM::Core::Collection" ), 
    Description ( 
       "A concrete version of Collection. This class represents a "
       "generic and instantiable collection, such as a group of "
       "ComputerSystems (for example, a pool of hosts available for "
       "executing jobs). It is defined as a concrete subclass of the "
       "abstract CIM_Collection class, to be used in place of many "
       "specific subclasses that add no semantics. Note that when "
       "defining additional semantics for Collection, this class must "
       "not be subclassed. Specific semantics continue to be defined "
       "as subclasses of the abstract CIM_Collection. "
       "ConcreteCollection is limited in its use as a concrete form of "
       "a general collection or bag. It was deemed more prudent to "
       "create this concrete subclass than to change Collection from "
       "an abstract to a concrete class." )]
class CIM_ConcreteCollection : CIM_Collection {

      [Key, Override ( "InstanceID" ), 
       Description ( 
          "Within the scope of the instantiating Namespace, "
          "InstanceID opaquely and uniquely identifies an instance "
          "of this class. To ensure uniqueness within the "
          "NameSpace, the value of InstanceID should be constructed "
          "using the following \'preferred\' algorithm: \n"
          "<OrgID>:<LocalID> \n"
          "Where <OrgID> and <LocalID> are separated by a colon "
          "\':\', and where <OrgID> must include a unique name. It "
          "can be a copyrighted, trademarked, or otherwise unique "
          "name that is owned by the business entity that is "
          "creating or defining the InstanceID. Or, it could be a "
          "registered ID that is assigned to the business entity by "
          "a recognized global authority.(This requirement is "
          "similar to the <Schema Name>_<Class Name> structure of "
          "Schema class names.) In addition, to ensure uniqueness "
          "<OrgID> must not contain a colon (\':\'). When using "
          "this algorithm, the first colon to appear in InstanceID "
          "must appear between <OrgID> and <LocalID>. \n"
          "\n"
          "<LocalID> is chosen by the business entity and should "
          "not be re-used to identify different underlying "
          "(real-world) elements. If the above \'preferred\' "
          "algorithm is not used, the defining entity must ensure "
          "that the resulting InstanceID is not re-used as any of "
          "the InstanceIDs produced by this or other providers for "
          "the NameSpace of this instance." )]
   string InstanceID;


};