How and where to return the result from the observer?

Question

Magento

I intercept an event (for example, adding a product to the cart).
I get an array $array = $observer->getEvent()->getData('quote_item')->getData()
How to pass it (and where) correctly in order to process it?
Thanks in advance

Answer 1

Well, you intercepted the event, received some data, you can process it in the observer file as you need and continue executing the code. Or you are doing something wrong. Because all observers are declared in the module config, and then work directly with the intercepted event in the file that you declared under the event