Thoughts: object-oriented source code parsing and reading need to pay attention and grasp the point
to get to know the business will understand better the composition and behavior of the object, the object is an abstract model of business data, but also to figure out the business implications of the model.
The movement of the model or model-based operations made by the representative of the operation of the business, on behalf of the business scene, but also to understand better.
In short, to grasp two things: Operational Data Model (structures and components), the model