Locate the collection persister by the collection role, requiring that
            such a persister exist.
            
Namespace: NHibernate.Hql.Ast.ANTLRAssembly: NHibernate (in NHibernate.dll) Version: 3.2.0.4000 (3.2.0.4000)
Syntax
| C# | 
|---|
public IQueryableCollection RequireQueryableCollection( string role )  | 
| Visual Basic | 
|---|
Public Function RequireQueryableCollection ( _ role As String _ ) As IQueryableCollection  | 
| Visual C++ | 
|---|
public: IQueryableCollection^ RequireQueryableCollection( String^ role )  | 
Parameters
- role
 - Type: System..::..String
The collection role name.