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-rw-r--r--include/classes/BigPipe/Item.php5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/classes/BigPipe/Item.php b/include/classes/BigPipe/Item.php
index 5edf9c8..9c66eb9 100644
--- a/include/classes/BigPipe/Item.php
+++ b/include/classes/BigPipe/Item.php
@@ -15,6 +15,11 @@ abstract class Item {
protected $phaseDoneJS = [];
#===============================================================================
+ # Required methods in child classes
+ #===============================================================================
+ abstract public function getStructure(): array;
+
+ #===============================================================================
# Return the unique ID
#===============================================================================
public function getID() {