Pinq\Analysis\Types\Type::getInvocation PHP Method

    public function getInvocation(O\InvocationExpression $expression)
    {
        return $this->parentType->getInvocation($expression);
    }

 public function getInvocation(O\InvocationExpression $expression)
 {
     if ($this->invoker !== null) {
         return $this->invoker;
     }
     return parent::getInvocation($expression);
 }