public function visitStaticMethodCall(O\StaticMethodCallExpression $expression)
{
$classExpression = $expression->getClass();
$this->walk($classExpression);
$this->walk($expression->getName());
$this->walkAll($expression->getArguments());
$class = $this->validateStaticClassName($classExpression, 'static method call');
$this->addTypeOperation($expression, $this->typeSystem->getObjectType($class)->getStaticMethod($expression));
}