S3 method

An S3 method in programming is a way to organize and customize how functions behave with different types of data. It allows a single generic function to perform differently depending on the specific class or category of input it receives. For example, a function called "print" can behave differently when printing a text string versus printing a chart object. This approach makes code more flexible and easier to extend, as developers can define specialized behaviors for various data types without creating separate functions for each.