The class, which is a new block of code that I'm going to ask you to write if you choose to follow these tutorials, is this idea of encapsulate. everything that goes in between the open curly bracket and the closed curly bracket is everything that it means to be a bubble.
According to Ngram Viewer, similar use would be
1001 Things It Means to Be a Dad
I guess it means that the characteristics one must have to claim they are some specific type of group of people or something.
Is my understanding correct?