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<?php trait Aggregation { protected function callAggregation($method, $arguments, $problem = FALSE) { var_dump($method, $arguments, $problem); } protected function foo() { } } class AggregateWithUse { use Aggregation { Aggregation::callAggregation as public __call; } } class AggregateManually { use Aggregation; public function __call($method, $arguments, $problem = FALSE) { $this->callAggregation($method, $arguments, $problem); } } (new AggregateWithUse())->onTest(function() {}); (new AggregateManually())->onTest(function() {});