<ExtensionAttribute()>
Public Overloads Shared Function ToQuery(Of T As {Class, IEntity})( _
   ByVal entity As T _
) As EntityQuery(Of T)

Dim entity As T
Dim value As EntityQuery(Of T)
 
value = EntityQueryExtensions.ToQuery(Of T)(entity)

[ExtensionAttribute()]
public static EntityQuery<T> ToQuery<T>( 
   T entity
)
where T: class, IEntity

[ExtensionAttribute()]
public:
static EntityQuery<T^>^ ToQuerygeneric<typename T>
( 
   T^ entity
) 
where T: ref class, IEntity

var mgr = new DomainModelEntityManager();

var customers = mgr.Customers.ToList();
var aCust = customers.First();
// Build a query to retrieve this customer
var query = aCust.ToQuery();