Salesforce Software Developer interview questions

A friend referred me, they give out bonus for referrals so I gave my resume to him and he passed it on. I got a call from a recruiter who setup an hour long phone screen with a manager. The manager talked to me for a bit about what salesforce does and what his team does in particular, so I got the idea I was interviewing for his team in particular. We talked about my current job a bit, how aggressively I was looking for a new one, and then he asked a few general conceptual uestions that anybody who had real experience would be able to answer. Then the recruiter set up a day a week later for me to come in and be interrviewed in person. The all day interview consisted of 3 interviews with other developers, lunch with the manager, and a programming test. The test itself was quite easy, seems like it was more just to ensure that I actually had the experience I said I had. Lunch was good and we talked a lot about why I was looking for a new job and what the team was looking for. They also made clear that if it wasnt a fit for their team but they liked me that they would pass my resume on to other teams. I was asked a lot of questions, from whiteboarding code to conceptual stuff. One of the interviewers asked real hard questions and we actually got into some interesting discussion, I guess that sealed the deal. I was given an offer a week later.