title: App Engine Datastore ignoring "noindex" tag in Go
body: <p>I'm using go version go1.6.2 (appengine-1.9.40) darwin/amd64</p>
  
  <p>When saving a struct to the datastore, slices of structs which have been tagged as "noindex", are showing up as indexed in the datastore viewer, while non struct fields are correctly showing as unindexed </p>
  
  <p>As an example, I have:</p>
  
  <pre><code>Type User struct{
    Email string
    Buddies []Buddy `datastore:",noindex"`
    Language string `datastore:",noindex"`
  }
  
  Type Buddy struct{
    Name string `datastore:",noindex"`
    Age int `datastore:",noindex"`
  }
  </code></pre>
  
  <p>When saving a new <code>User</code> to the datastore, the datastore viewer shows the properties <code>Buddies.Name</code> and <code>Buddies.Age</code> as "Indexed" despite the fact that I've tagged them as "noindex".</p>
  
  <p>How do I get the datastore to not index structs?</p>