Index has Changed Operation

// Some index definition
$indexDefinition = new IndexDefinition();
$indexDefinition->setName("UsersByName");
$indexDefinition->setMaps(["from user in docs.Users select new { user.Name }"]);

// Define the has-changed operation, pass the index definition
$indexHasChangedOp = new IndexHasChangedOperation($indexDefinition);

// Execute the operation by passing it to Maintenance.Send
$store->maintenance()->send($indexHasChangedOp);

// Return values:
// false: The definition of the index passed is the SAME as the one deployed on the server
// true:  The definition of the index passed is DIFFERENT than the one deployed on the server
//        Or - index does not exist

IndexHasChangedOperation(?IndexDefinition $definition)