Mixin Question

mixin.js

// Define a class
var A = Class({
  toString: 'A',
  
  // Define a method
  method: function() {
    return 'ClassA';
  }
});

// Extend A
var B = A.extend({
  toString: 'B',

  // Add mixins to the prototype
  mixins: [
    {
      method: function() {
        return 'Mix1'+this._super();
      }
    },
    {
      method: function() {
        return 'Mix2'+this._super();
      }
    }
  ],
  
  // Override a method
  method: function() {
    return 'ClassB'+this._super();
  }
});

var b = new B();

// Add mixins to the instance
b.mixin({
  method: function() {
    return 'Mix4'+this._super();
  }
});

// Call a method
b.method();

What do you expect b.method() to return?