java.util" class="external-link"><code>List</code></a> index
 and <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link"><code>Map</code></a> key) becomes a new value that is appended to the index.
 The resulting index types associated with indexes on complex sub-fields of some object type <code>Foobar</code> are as follows:

 <div style="margin-left: 20px;">
 <table class="striped">
 <caption>Index Types</capti