/// <summary>
/// Internal use only - part of <see cref="IQueryProvider"/> implementation.
/// </summary>
/// <param name="expression"></param>
/// <returns></returns>
IQueryable IQueryProvider.CreateQuery(Expression expression)
{
// Not sure when this is called but it IS called on OfType() resolution
var methodExpr = (MethodCallExpression)expression;
// return type will be an IQueryable<X>
var returnType = methodExpr.Method.ReturnType;
// extract X
var typeT = TypeFns.GetGenericArgument(returnType);
// now do the equivalent of => return new EntityQuery<{typeT}>(expression, this);
var query = TypeFns.ConstructGenericInstance(typeof(EntityQuery <>), new Type[] { typeT },
expression, this);
return((IQueryable)query);
}