UIGraphicsPopContext
UIGraphicsPopContext is a fundamental function within Apple's UIKit framework, primarily used for managing graphics drawing contexts. It is the counterpart to UIGraphicsPushContext. Its core purpose is to remove the most recently pushed graphics context from the stack, returning the drawing environment to its previous state.
When a graphics context is pushed onto the stack using UIGraphicsPushContext, subsequent drawing operations are directed
The stack mechanism is crucial for maintaining the correct drawing environment, especially in complex drawing scenarios