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-rw-r--r--engine/classes/ElggBatch.php2
1 files changed, 2 insertions, 0 deletions
diff --git a/engine/classes/ElggBatch.php b/engine/classes/ElggBatch.php
index 5c2172ae7..5b4132db4 100644
--- a/engine/classes/ElggBatch.php
+++ b/engine/classes/ElggBatch.php
@@ -11,6 +11,8 @@
* can be a string, an array, or a closure.
* {@link http://php.net/manual/en/language.pseudo-types.php}
*
+ * The callback function must accepts 3 arguments: an entity, the getter used, and the options used.
+ *
* Results from the callback are stored in callbackResult.
* If the callback returns only booleans callbackResults will be the combined
* result of all calls.