public new void ToString()
{
var joinClause = new JoinClause("x", typeof(Cook), Expression.Constant(0), Expression.Constant(1), Expression.Constant(2));
var groupJoinClause = new GroupJoinClause("y", typeof(IEnumerable <Cook>), joinClause);
Assert.That(groupJoinClause.ToString(), Is.EqualTo("join Cook x in 0 on 1 equals 2 into IEnumerable`1 y"));
}
/// <summary>
/// Overrides the <see cref="QueryModelVisitorBase.VisitGroupJoinClause(GroupJoinClause, QueryModel, int)"/>.
/// </summary>
/// <param name="groupJoinClause">The <see cref="GroupJoinClause"/>.</param>
/// <param name="queryModel">The <see cref="QueryModel"/>.</param>
/// <param name="index">The index.</param>
public override void VisitGroupJoinClause(GroupJoinClause groupJoinClause, QueryModel queryModel, int index)
{
throw new NotSupportedException($"Group Join clause is not supported: {groupJoinClause.ToString()}.");
}