Symfony\Component\DependencyInjection\Definition::setMethodCalls PHP Method

    public function setMethodCalls(array $calls = array())
    {
        $this->calls = array();
        foreach ($calls as $call) {
            $this->addMethodCall($call[0], $call[1]);
        }

        return $this;
    }

 /**
  * @param Definition $definition
  * @param string $methodName
  * @param array $arguments
  */
 private function callMethodFirst(Definition $definition, $methodName, array $arguments)
 {
     $newMethodCall = array($methodName, $arguments);
     $currentMethodCalls = $definition->getMethodCalls();
     array_unshift($currentMethodCalls, $newMethodCall);
     $definition->setMethodCalls($currentMethodCalls);
 }