PHPLIB-499: Deprecate IndexInfo::getNamespace

Author: alcaeus

src/Model/IndexInfo.php

@@ -21,6 +21,8 @@
 use MongoDB\Exception\BadMethodCallException;
 use function array_key_exists;
 use function array_search;
+use function sprintf;
+use function trigger_error;
 
 /**
  * Index information model class.
@@ -95,9 +97,12 @@ public function getName()
      * Return the index namespace (e.g. "db.collection").
      *
      * @return string
+     * @deprecated Deprecated in 1.7.0
      */
     public function getNamespace()
     {
+        @trigger_error(sprintf('The "%s" method is deprecated since mongodb/mongodb 1.7 and will be dropped in 2.0.', __METHOD__));
+
         return (string) $this->info['ns'];
     }