title: How to create a Clustered Index with Entity Framework Core
body: <p>From EF6.1, we have a way of specifying a clustered index on a property</p>
  
  <pre><code>public class Person 
  {
    [Index(IsClustered = true, IsUnique = true)]
    public long UserName { get; set; }
  }
  </code></pre>
  
  <p>But this Index attribute does not seem to be in EF Core right now? In EF Core how do you achieve this?</p>