Message is added to queue, wait to xxxx

sometimes when you do something on Magento you can this message "Message is added to queue, wait to xx"

Example: "Message is added to queue, wait to get your coupons soon"

in order to start this manually, you can use the below command to get the list of queue

php bin/magento queue:consumers:list

product_action_attribute.update
product_action_attribute.website.update
exportProcessor
media.storage.catalog.image.resize
codegeneratorProcessor
media.content.synchronization
media.gallery.synchronization
async.operations.all

then see what you want to do and execute it, in our case 

php bin/magento queue:consumers:run codegeneratorProcessor