$this->trxIdleCallbacks = []; // consumed (and recursion guard)
$this->trxEndCallbacks = []; // consumed (recursion guard)
foreach ( $callbacks as $callback ) {
$this->trxIdleCallbacks = []; // consumed (and recursion guard)
$this->trxEndCallbacks = []; // consumed (recursion guard)
foreach ( $callbacks as $callback ) {