We might want two instances of a person to be able to procreate. We can implement this by writing methods. Instance methods are actions an object does to itself; static methods are actions the type does. Which you choose depends on what makes sense for the action.
Note
Good Practice
Having both the static and instance methods to perform similar actions often makes sense. For example, string has both a Compare static method and a CompareTo instance method. This makes the functionality more visible to programmers using the type.
Add two methods to the Person class that will allow two Person objects to procreate, as shown in the following code:
// methods to "multiply"
public static Person Procreate(Person p1, Person p2)
{
var baby = new Person
{
Name = $"Baby of {p1.Name} and {p2.Name}"
};
p1.Children.Add(baby);
p2.Children.Add(baby);
return baby;
}
public Person ProcreateWith(Person...