public function findChildExecutions(Node $node = null)
    {
        if ($node === null) {
            return $this->childExecutions;
        }
        
        return array_filter($this->childExecutions, function (Execution $execution) use ($node) {
            return $execution->getNode() === $node;
        });
    }
public function findChildExecutions(Node $node = null)
    {
        if ($node === null) {
            return $this->childExecutions;
        }
        
        return array_filter($this->childExecutions, function (Execution $execution) use ($node) {
            return $execution->getNode() === $node;
        });
    }
public function findChildExecutions ( Node $ node = null ) { if ( $ node === null ) { return $ this -> childExecutions ; } return array_filter ( $ this -> childExecutions , function ( Execution $ execution ) use ( $ node ) { return $ execution -> getNode ( ) === $ node ; } ) ; }
Find all child executions.

@param Node $node Optional filter, return only executions that have arrived at the given node.
@return array<Execution> All matching child executions.
Find all child executions .