What is the 2 flip tax in NYC?

Excuse me, could you elaborate on what exactly is meant by the "2 flip tax" in the context of real estate transactions in New York City? Is this a specific type of tax imposed on properties that have been sold within a short period of time, perhaps as a means to discourage speculative buying and selling? And if so, what is the exact percentage or amount of this tax, and how does it impact buyers and sellers in the market? I'm interested in understanding the specifics of this policy and its potential implications on the local real estate landscape.