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-rwxr-xr-xext/spl/internal/recursiveiterator.inc1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/spl/internal/recursiveiterator.inc b/ext/spl/internal/recursiveiterator.inc
index 02bf1a8d91..b37c6901ab 100755
--- a/ext/spl/internal/recursiveiterator.inc
+++ b/ext/spl/internal/recursiveiterator.inc
@@ -21,6 +21,7 @@ interface RecursiveIterator implements Iterator
function hasChildren();
/** @return the sub iterator for the current element
+ * @note The returned object must implement RecursiveIterator.
*/
function getChildren();
}