internal PropTagKey(PropTag propertyTag)
 {
     if (propertyTag.IsApplicationSpecific())
     {
         this.propertyTag = propertyTag;
         return;
     }
     this.propertyTag = PropTagHelper.PropTagFromIdAndType(propertyTag.Id(), PropType.Unspecified);
 }
 internal static bool IsApplicationSpecificPropertyTag(PropTag propertyTag)
 {
     return(propertyTag.IsApplicationSpecific());
 }