如何检查类型参数是否为Dart中的特定类型？

class Person {
  String name;
  
  Person(this.name);
}

class Student extends Person {
  int grade;
  
  Student(String name, this.grade) : super(name);
}

void main() {
  var person = Person('John');
  var student = Student('Alice', 10);
  
  print(person is Person); // true
  print(student is Person); // true，因为Student是Person的子类
  
  print(person is Student); // false
  print(student is Student); // true
  
  // 使用类型检查来执行不同的操作
  if (person is Student) {
    print('This person is a student');
  } else {
    print('This person is not a student');
  }
}