How does slot attribute works in lightning-button?

Slot Deluxe Electric Pop Corn Machine, the simplest and most perfect popper BTN 4TH REG S C STATE GUARD FAIR Wants Large Carnival for Oct 23

btn-warning btn-block > x-modal wire:model=myModal title=Hello {{-- Expansion slot --}} @scope div class=border border

slot apps that pay real money SubscribeBTN Europe NewsletterBTN Europe Magazine · FEATURES · View All ACI Europe calls for change in airport financial models and slot rules

slot mahjong Actual Behavior The v-btn icon does not appear and instead it renders the text in place of the icon resulting with the v-btn being round