MIAMI — Dwyane Wade was walking down the hallway toward the Miami Heat locker room in the wee hours of Friday morning, still in uniform and fussing with the new championship hat atop his head as his team and their families were in the midst of partying the night away.He stopped briefly and assessed the celebration.“We’re getting pretty good at these,” Wade said.That’s understandable, the Heat are getting plenty of practice at throwing themselves end-of-season parties. Four trips to the NBA Finals since 2006, three championships in that span and with the last two titles coming consecutively, it’s making the decisions that the Heat and LeBron James made three summers ago look pretty smart.By topping San Antonio in Game 7 of a back-and-forth NBA Finals on Thursday, the Heat became the sixth franchise in league history to win consecutive championships. It’s their third title overall; only four clubs have more.