<ExtensionAttribute()>
Public Overloads Shared Function Include(Of T)( _
   ByVal query As IEntityQuery(Of T), _
   ByVal expr As Expression(Of Func(Of T,Object)) _
) As IEntityQuery(Of T)

Dim query As IEntityQuery(Of T)
Dim expr As Expression(Of Func(Of T,Object))
Dim value As IEntityQuery(Of T)
 
value = EntityQueryExtensions.Include(Of T)(query, expr)

[ExtensionAttribute()]
public static IEntityQuery<T> Include<T>( 
   IEntityQuery<T> query,
   Expression<Func<T,object>> expr
)

[ExtensionAttribute()]
public:
static IEntityQuery<T^>^ Includegeneric<typename T>
( 
   IEntityQuery<T^>^ query,
   Expression<Func<T^,Object^>^>^ expr
) 

// Query for some customers, and include their orders.
var query1 = mgr.Customers
  .Where(c => c.Country == "UK")
  .Include(c=> c.OrderSummaries);

foreach (Customer c in query1) {
  Console.WriteLine("order count = " + c.OrderSummaries.Count);
}